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Re: [shell-script] Ajuda Com Shell

From: Vinicius Ruiz
Subject: Re: [shell-script] Ajuda Com Shell
Date: Mon, 22 Oct 2018 14:22:39 +0000 (UTC) 
 Olá Pere,
Dessa forma passando com variáveis fica bem simples também.
Obrigado pela sugestão...
Graciassss...
Abs..
Vinicius
    Em sábado, 20 de outubro de 2018 15:09:27 BRT, 'T.Collons' address@hidden 
[shell-script] <address@hidden> escreveu:  
 
     
 

Hola Vinicious
 

 
 
Te escribo en castellano, porque aquí en la lista ya me han dicho que no use a 
google para hacerlo en "brasileiro".
 
Ahora que he visto que has puesto de tu parte, te informo que con SED también 
puedes usar variables que puedes definir antes de ejecutar la substitución, te 
lo digo porque no creo que todas las substituciones vayan a ser para la misma 
fecha.
 
Imagino que "SEGUNDA_SEXTA_JANEIRO DESCRIPTION "SEGUNDA_SEXTA_JANEIRO" es una 
fecha o una hora, no se exactamente que significa, pero que ira cambiando en 
los distintos ficheros y tendrás que substituirlo por distintas fechas u horas, 
así que si creas un script, puedes escribir como parámetro la cadena a 
substituir y pasársela a SED.
 
SED quedaría así 
 
  
original="ON RUNCYCLE SEGUNDA_SEXTA_JANEIRO DESCRIPTION "SEGUNDA_SEXTA_JANEIRO"
 
TuSubstitucion="ON RUNCYCLE TODA_PRIMEIRA_QUARTA_JAN VALIDFROM 01/02/2019 
"FREQ=MONTHLY;INTERVAL=12;BYDAY=1WE""
 
echo $original |sed 's|ON RUNCYCLE.*$|'"$TuSubstitucion"'|'
 
 

 
 
 El 20/10/18 a les 01:30, Vinicius address@hidden [shell-script] ha escrit:
  
    Jonathan e Itamar 
 
  Obrigado pelas explicações e pela ajuda.
 
  Ficou claro aqui a interpretação.
 
  Grande abraço.
 
  Vinicius 
 
  Sent from BlueMail  On Oct 19, 2018, at 19:22, "address@hidden 
[shell-script]" <address@hidden> wrote: 
     Cara Vínicius   
   O Jonathan explicou bem o siginificado da estrutura no sed quando se usa a 
substituição.   Mas a sua abordagem anterior você se valeu do recurso do 
escape, ou como diria o mestre Julio, você usou a kriptonita na barra, tirando 
os poderes dela de ser o caractere separador.   
   na estrutura da substituição o primeiro caractere após o s é usado como o 
elemento separador das partes e nommalmente esse caractere é a barra simples, 
mas quando o texto a ser substituido tem barras em seu conteúdo, o sed pode 
confundir e interpretrar essa barra do texto como separador, entãi para que 
isso não ocorra escapamos, tiramos o poder da barra usando \/.   Como seu texto 
tinha datas que usavam barras, essas barras precisavam usar esse recurso nesse 
contexto mais comum.   Mas ao usar outro caractere logo após o s, no caso eu 
usei o pipe ( | ) e o Jonathan sugeriu a cerquilha ( # ), trocamos o caractere 
separador, e então não há a necessidade de escapar nessa segundo caso. E 
poderia ser qualquer caractere além do pipe ou cerquilha, como uma vírgula ( , 
), arroba ( @ ), undercore ( _ ), ou até uma letra comum ou até mesmo um 
espaço. O importante é escolher um caractere que não esteja no texto a ser 
substituído, senão haverá a necessidade de escapar esse caractere.   
   Não sei se fui claro, mas essa é a idéia   
   []'s   Itamar 
   
   
 
 -- 
 

 
 
 
Pere
 
address@hidden
 

 
 
 
  
 
 
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Subject: Array mais lento do que "-f $aquivo"
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From: Eri Ramos Bastos <address@hidden>

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Olá, lista!

Tenho um script que roda a seguinte função ~300 vezes (sourced de outro
arquivo):

check_role() {
if [ -d /etc/roles/ ]; then
if [ -f /etc/roles/$1 ]; then
return 0
fi
fi
return 1
}

Pensei que iria ganhar performance fazendo isso:

list_roles() {
if [ -d /etc/roles/ ]; then
cd /etc/roles
ls
else
echo ""
fi

}

export ROLES=($(list_roles))
check_role() {
local role=$1
for r in "${ROLES[@]}"; do
[[ "$r" == "$role" ]] && return 0
done
return 1

}

Mas na verdade o tempo de execução piorou:

Original:
real    0m2.069s
user    0m0.300s
sys     0m1.644s

Novo:
real    0m2.857s
user    0m0.348s
sys     0m2.296s


Me parece contra-intuitivo, já que o original precisa checar em disco todas
as vezes. Onde estou errado?

Obrigado!

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<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Olá, 
lista!<div><br></div><div>Tenho um script que roda a seguinte função ~300 vezes 
(sourced de outro arquivo):</div><div><br></div><div><div><font 
face="monospace, monospace" size="1">check_role() {</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre"> </span>if [ 
-d /etc/roles/ ]; then<br></font></div><div><font face="monospace, monospace" 
size="1"><span style="white-space:pre">               </span>if [ -f 
/etc/roles/$1 ]; then</font></div><div><font face="monospace, monospace" 
size="1"><span style="white-space:pre">                 </span>return 
0</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre">              </span>fi</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre">    
</span>fi</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre">    </span>return 1</font></div><div><font 
face="monospace, monospace" 
size="1">}</font></div></div><div><br></div><div>Pensei que iria ganhar 
performance fazendo isso:</div><div><br></div><div><div><font size="1" 
face="monospace, monospace">list_roles() {</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre"> </span>if [ -d 
/etc/roles/ ]; then</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre">           </span>cd 
/etc/roles</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre">         </span>ls</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre">    
</span>else</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre">          </span>echo 
&quot;&quot;</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre">     </span>fi</font></div><div><font size="1" 
face="monospace, monospace"><br></font></div><div><font size="1" 
face="monospace, monospace">}</font></div><div><font size="1" face="monospace, 
monospace"><br></font></div><div><font size="1" face="monospace, 
monospace">export ROLES=($(list_roles))</font></div></div><div><div><font 
size="1" face="monospace, monospace">check_role() {</font></div><div><font 
size="1" face="monospace, monospace"><span style="white-space:pre">     
</span>local role=$1<br></font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre">     </span>for r in 
&quot;${ROLES[@]}&quot;; do</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre">          </span>[[ &quot;$r&quot; == 
&quot;$role&quot; ]] &amp;&amp; return 0</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre"> 
</span>done</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre">  </span>return 1</font></div><div><font size="1" 
face="monospace, monospace"><br></font></div><div><font size="1" 
face="monospace, monospace">}</font></div></div><div><br></div><div>Mas na 
verdade o tempo de execução 
piorou:</div><div><br></div><div>Original:</div><div><span 
style="font-family:monospace">real    0m2.069s </span><br 
style="font-family:monospace"><span style="font-family:monospace">user    
0m0.300s </span><br style="font-family:monospace"><span 
style="font-family:monospace">sys     0m1.644s</span><span 
style="font-family:monospace"><br></span></div><div><span 
style="font-family:monospace"><br></span></div><div><font face="arial, 
helvetica, sans-serif">Novo:<br></font><font face="monospace">real    0m2.857s
</font><br><font face="monospace">user    0m0.348s
</font><br><font face="monospace">sys     0m2.296s
</font><br><br><br>
<font face="arial, helvetica, sans-serif">Me parece contra-intuitivo, já que o 
original precisa checar em disco todas as vezes. Onde estou 
errado?</font></div><div><font face="arial, helvetica, 
sans-serif"><br></font></div><div><font face="arial, helvetica, 
sans-serif">Obrigado!</font></div><div><br></div></div></div></div></div>

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Subject: Re: [shell-script] Array mais lento do que "-f $aquivo"
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From: "Julio C. Neves" <address@hidden>

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Fala Eri
Acho vc ganharia performance se fizesse:

check_role() {
local ROLES=($(ls /etc/roles)) || return 1
for r in "${ROLES[@]}"; do
[[ "$r" == "$1" ]] && return 0
done
}

Abraços,
Julio

*» Não tem tempo para fazer um curso presencial?*
*» Na sua cidade não tem nenhum bom curso de Linux?*
*» **Conheça nosso portal educacional e estude conosco: *
*     http://www.dicas-l.com.br/educacao
<http://www.dicas-l.com.br/educacao/>*
*»  Treinamento presencial (em 4 sábados) no RJ e BSB *
*    em http://bit.ly/cursoshelljulioneves
<http://bit.ly/cursoshelljulioneves>                   *



*Também damos treinamento em sua empresa*
*em qualquer cidade**, **com certificado **e nota fiscal.*



Em qua, 24 de out de 2018 às 11:41, Eri Ramos Bastos address@hidden
[shell-script] <address@hidden> escreveu:

>
>
> Olá, lista!
>
> Tenho um script que roda a seguinte função ~300 vezes (sourced de outro
> arquivo):
>
> check_role() {
> if [ -d /etc/roles/ ]; then
> if [ -f /etc/roles/$1 ]; then
> return 0
> fi
> fi
> return 1
> }
>
> Pensei que iria ganhar performance fazendo isso:
>
> list_roles() {
> if [ -d /etc/roles/ ]; then
> cd /etc/roles
> ls
> else
> echo ""
> fi
>
> }
>
> export ROLES=($(list_roles))
> check_role() {
> local role=$1
> for r in "${ROLES[@]}"; do
> [[ "$r" == "$role" ]] && return 0
> done
> return 1
>
> }
>
> Mas na verdade o tempo de execução piorou:
>
> Original:
> real    0m2.069s
> user    0m0.300s
> sys     0m1.644s
>
> Novo:
> real    0m2.857s
> user    0m0.348s
> sys     0m2.296s
>
>
> Me parece contra-intuitivo, já que o original precisa checar em disco
> todas as vezes. Onde estou errado?
>
> Obrigado!
>
> 
>

--000000000000f90a550578fade1c
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Content-Transfer-Encoding: quoted-printable

<div dir="ltr"><div dir="ltr"><div class="gmail_default" 
style="font-family:monospace,monospace">Fala Eri</div><div 
class="gmail_default" style="font-family:monospace,monospace">Acho vc ganharia 
performance se fizesse:</div><div class="gmail_default" 
style="font-family:monospace,monospace"><br></div><div 
class="gmail_default"><div class="gmail_default"><font face="monospace, 
monospace">check_role() {</font></div><div class="gmail_default"><font 
face="monospace, monospace"><span style="white-space:pre">     </span>local 
ROLES=($(ls /etc/roles)) || return 1</font></div><div 
class="gmail_default"><font face="monospace, monospace"><span 
style="white-space:pre">       </span>for r in &quot;${ROLES[@]}&quot;; 
do</font></div><div class="gmail_default"><font face="monospace, 
monospace"><span style="white-space:pre">             </span>[[ &quot;$r&quot; 
== &quot;$1&quot; ]] &amp;&amp; return 0</font></div><div 
class="gmail_default"><font face="monospace, monospace"><span 
style="white-space:pre">       </span>done</font></div><div 
class="gmail_default"><font face="monospace, monospace">}</font></div><div 
class="gmail_default"><font face="monospace, 
monospace"><br></font></div></div><div><div dir="ltr" 
class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div 
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div><div><div style="font-size:small">Abraços,</div></div><div 
style="font-size:small">Julio</div><div style="font-size:small"><br></div><div 
style="font-size:small"><font face="monospace, monospace"><b>» Não tem tempo 
para fazer um curso presencial?</b></font></div><div 
style="font-size:small"><font face="monospace, monospace"><b>» Na sua cidade 
não tem nenhum bom curso de Linux?</b></font></div><div><font face="monospace, 
monospace" style="font-size:small"><b>» </b></font><b><font face="trebuchet ms, 
sans-serif" style="font-size:12.8px">Conheça nosso portal educacional e estude 
conosco: </font></b></div><div><b><font face="trebuchet ms, sans-serif" 
style="font-size:12.8px">     h</font><span 
style="font-size:12.8px;font-family:&quot;trebuchet 
ms&quot;,sans-serif">ttp://<a href="http://www.dicas-l.com.br/educacao/"; 
style="color:rgb(17,85,204)" 
target="_blank">www.dicas-l.com.br/educacao</a></span></b></div><div><b>»  
Treinamento presencial (<font color="#660000" 
style="background-color:rgb(255,229,153)">em 4 sábados</font>) no RJ e BSB 
</b></div><div><b>    em <a href="http://bit.ly/cursoshelljulioneves"; 
style="color:rgb(17,85,204);font-family:Verdana,Geneva,sans-serif;font-size:13.3333px"
 target="_blank">http://bit.ly/cursoshelljulioneves</a>                   
</b><img src="http://www.sindepolpb.com.br/novo3.gif"; style="font-size: 
12.8px;"></div><div style="font-size:small"><br></div></div><div 
style="font-size:small"><img 
src="https://docs.google.com/uc?export=download&amp;id=1ht9llgh0CjQlapOqFtxVcSRCcopbeHYc&amp;revid=0B6Rg1uyhMVcbaVpnR2xqaXhpQ094RnNMYkZUeWhQZVZvdzFzPQ";
 width="420" height="48"><br></div><div><div style="font-size:12.8px"><span 
style="font-size:small;font-family:monospace,monospace"><font 
color="#000000"><b><br></b></font></span></div><div 
style="font-size:12.8px"><span 
style="font-size:small;font-family:monospace,monospace"><font 
color="#000000"><b>Também damos treinamento em sua 
empresa</b></font></span></div><div style="font-size:12.8px"><b 
style="font-size:12.8px"><font color="#660000" 
style="background-color:rgb(255,229,153)">em qualquer cidade</font></b><b 
style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">, 
</span></span></b><b style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">com 
certificado </span></span></b><b 
style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">e nota 
fiscal.</span></span></b></div></div><div style="font-size:12.8px"><b 
style="color:rgb(0,0,0);font-size:12.8px"><span 
style="font-family:monospace,monospace"><span 
style="font-size:small"><br></span></span></b></div><div><div 
style="font-size:12.8px"><div style="font-size:small"><div 
style="font-family:monospace,monospace;display:inline"><font face="Bitstream 
Vera Sans, sans-serif"><font 
style="font-size:11pt"></font></font></div></div></div></div><div><blockquote 
style="font-family:arial;font-size:small;margin:0px 0px 0px 
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div 
bgcolor="#FFFFFF"><blockquote><div 
dir="ltr"></div></blockquote></div></blockquote></div>


<p style="margin-bottom:0cm"></p><div>
<p></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div
 class="gmail_quote"><div dir="ltr">Em qua, 24 de out de 2018 às 11:41, Eri 
Ramos Bastos <a href="mailto:address@hidden";>address@hidden</a> [shell-script] 
&lt;<a href="mailto:address@hidden";>address@hidden</a>&gt; 
escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 
.8ex;border-left:1px #ccc solid;padding-left:1ex">


<u></u>









 
<div style="background-color:#fff">
<span style="display:none"> </span>


<div id="m_-8880873497147591167ygrp-mlmsg">
  <div id="m_-8880873497147591167ygrp-msg">


    <div id="m_-8880873497147591167ygrp-text">
      
      
      <p><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Olá, 
lista!<div><br></div><div>Tenho um script que roda a seguinte função ~300 vezes 
(sourced de outro arquivo):</div><div><br></div><div><div><font 
face="monospace, monospace" size="1">check_role() {</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre-wrap">   
</span>if [ -d /etc/roles/ ]; then<br></font></div><div><font face="monospace, 
monospace" size="1"><span style="white-space:pre-wrap">          </span>if [ -f 
/etc/roles/$1 ]; then</font></div><div><font face="monospace, monospace" 
size="1"><span style="white-space:pre-wrap">                    </span>return 
0</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre-wrap">         </span>fi</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre-wrap">       
</span>fi</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre-wrap">       </span>return 1</font></div><div><font 
face="monospace, monospace" 
size="1">}</font></div></div><div><br></div><div>Pensei que iria ganhar 
performance fazendo isso:</div><div><br></div><div><div><font size="1" 
face="monospace, monospace">list_roles() {</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre-wrap">    </span>if [ 
-d /etc/roles/ ]; then</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">              </span>cd 
/etc/roles</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">            </span>ls</font></div><div><font 
size="1" face="monospace, monospace"><span style="white-space:pre-wrap">       
</span>else</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">             </span>echo 
&quot;&quot;</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">        </span>fi</font></div><div><font size="1" 
face="monospace, monospace"><br></font></div><div><font size="1" 
face="monospace, monospace">}</font></div><div><font size="1" face="monospace, 
monospace"><br></font></div><div><font size="1" face="monospace, 
monospace">export ROLES=($(list_roles))</font></div></div><div><div><font 
size="1" face="monospace, monospace">check_role() {</font></div><div><font 
size="1" face="monospace, monospace"><span style="white-space:pre-wrap">        
</span>local role=$1<br></font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">        </span>for r in 
&quot;${ROLES[@]}&quot;; do</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">             </span>[[ 
&quot;$r&quot; == &quot;$role&quot; ]] &amp;&amp; return 
0</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">    </span>done</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre-wrap">     
</span>return 1</font></div><div><font size="1" face="monospace, 
monospace"><br></font></div><div><font size="1" face="monospace, 
monospace">}</font></div></div><div><br></div><div>Mas na verdade o tempo de 
execução piorou:</div><div><br></div><div>Original:</div><div><span 
style="font-family:monospace">real    0m2.069s </span><br 
style="font-family:monospace"><span style="font-family:monospace">user    
0m0.300s </span><br style="font-family:monospace"><span 
style="font-family:monospace">sys     0m1.644s</span><span 
style="font-family:monospace"><br></span></div><div><span 
style="font-family:monospace"><br></span></div><div><font face="arial, 
helvetica, sans-serif">Novo:<br></font><font face="monospace">real    0m2.857s
</font><br><font face="monospace">user    0m0.348s
</font><br><font face="monospace">sys     0m2.296s
</font><br><br><br>
<font face="arial, helvetica, sans-serif">Me parece contra-intuitivo, já que o 
original precisa checar em disco todas as vezes. Onde estou 
errado?</font></div><div><font face="arial, helvetica, 
sans-serif"><br></font></div><div><font face="arial, helvetica, 
sans-serif">Obrigado!</font></div><div><br></div></div></div></div></div>
</p>

    </div>
     

    
    <div style="color:#fff;height:0"></div>


</div>



  






</blockquote></div>

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Date: Wed, 24 Oct 2018 12:53:33 -0300
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Subject: Re: [shell-script] Array mais lento do que "-f $aquivo"
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From: Eri Ramos Bastos <address@hidden>

--000000000000b56cbd0578fb7d72
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Obrigado Júlio.

Melhorou, mas ainda inferior à original. Acho que vou manter o que tinha
mesmo. ;)

Com sua sugestão:
real    0m2.193s
user    0m0.328s
sys     0m1.772s

Original:
real    0m2.114s
user    0m0.268s
sys     0m1.768s

Abraços!

On Wed, Oct 24, 2018 at 12:17 PM 'Julio C. Neves' address@hidden
[shell-script] <address@hidden> wrote:

>
>
> Fala Eri
> Acho vc ganharia performance se fizesse:
>
> check_role() {
> local ROLES=($(ls /etc/roles)) || return 1
> for r in "${ROLES[@]}"; do
> [[ "$r" == "$1" ]] && return 0
> done
> }
>
> Abraços,
> Julio
>
> *» Não tem tempo para fazer um curso presencial?*
> *» Na sua cidade não tem nenhum bom curso de Linux?*
> *» **Conheça nosso portal educacional e estude conosco: *
> *     http://www.dicas-l.com.br/educacao
> <http://www.dicas-l.com.br/educacao/>*
> *»  Treinamento presencial (em 4 sábados) no RJ e BSB *
> *    em http://bit.ly/cursoshelljulioneves
> <http://bit.ly/cursoshelljulioneves>                   *
>
>
>
> *Também damos treinamento em sua empresa*
> *em qualquer cidade**, **com certificado **e nota fiscal.*
>
>
>
> Em qua, 24 de out de 2018 às 11:41, Eri Ramos Bastos address@hidden
> [shell-script] <address@hidden> escreveu:
>
>>
>>
>> Olá, lista!
>>
>> Tenho um script que roda a seguinte função ~300 vezes (sourced de outro
>> arquivo):
>>
>> check_role() {
>> if [ -d /etc/roles/ ]; then
>> if [ -f /etc/roles/$1 ]; then
>> return 0
>> fi
>> fi
>> return 1
>> }
>>
>> Pensei que iria ganhar performance fazendo isso:
>>
>> list_roles() {
>> if [ -d /etc/roles/ ]; then
>> cd /etc/roles
>> ls
>> else
>> echo ""
>> fi
>>
>> }
>>
>> export ROLES=($(list_roles))
>> check_role() {
>> local role=$1
>> for r in "${ROLES[@]}"; do
>> [[ "$r" == "$role" ]] && return 0
>> done
>> return 1
>>
>> }
>>
>> Mas na verdade o tempo de execução piorou:
>>
>> Original:
>> real    0m2.069s
>> user    0m0.300s
>> sys     0m1.644s
>>
>> Novo:
>> real    0m2.857s
>> user    0m0.348s
>> sys     0m2.296s
>>
>>
>> Me parece contra-intuitivo, já que o original precisa checar em disco
>> todas as vezes. Onde estou errado?
>>
>> Obrigado!
>>
>>
>
> 
>

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Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir="ltr">Obrigado Júlio.<div><br></div><div>Melhorou, mas ainda inferior 
à original. Acho que vou manter o que tinha mesmo. 
;)</div><div><br></div><div>Com sua sugestão:</div><div><span 
style="font-family:monospace"><span style="color:rgb(0,0,0)">real    0m2.193s
</span><br>user    0m0.328s
<br>sys     0m1.772s<br>
<br></span></div><div><font face="arial, helvetica, 
sans-serif">Original:</font></div><div><span 
style="font-family:monospace"><span style="color:rgb(0,0,0)">real    0m2.114s
</span><br>user    0m0.268s
<br>sys     0m1.768s<br>
<br></span></div><div><font face="arial, helvetica, 
sans-serif">Abraços!</font></div><br><div class="gmail_quote"><div dir="ltr">On 
Wed, Oct 24, 2018 at 12:17 PM &#39;Julio C. Neves&#39; <a 
href="mailto:address@hidden";>address@hidden</a> [shell-script] &lt;<a 
href="mailto:address@hidden";>address@hidden</a>&gt; wrote:<br></div><blockquote 
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc 
solid;padding-left:1ex">






        




<div>





<br><br>




<div dir="ltr"><div dir="ltr"><div style="font-family:monospace,monospace">Fala 
Eri</div><div style="font-family:monospace,monospace">Acho vc ganharia 
performance se fizesse:</div><div 
style="font-family:monospace,monospace"><br></div><div><div><font 
face="monospace, monospace">check_role() {</font></div><div><font 
face="monospace, monospace"><span style="white-space:pre-wrap">    </span>local 
ROLES=($(ls /etc/roles)) || return 1</font></div><div><font face="monospace, 
monospace"><span style="white-space:pre-wrap">        </span>for r in 
&quot;${ROLES[@]}&quot;; do</font></div><div><font face="monospace, 
monospace"><span style="white-space:pre-wrap">              </span>[[ 
&quot;$r&quot; == &quot;$1&quot; ]] &amp;&amp; return 0</font></div><div><font 
face="monospace, monospace"><span style="white-space:pre-wrap">        
</span>done</font></div><div><font face="monospace, 
monospace">}</font></div><div><font face="monospace, 
monospace"><br></font></div></div><div><div dir="ltr" 
class="m_7350348821723749737gmail_signature"><div dir="ltr"><div><div 
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div 
dir="ltr"><div><div><div style="font-size:small">Abraços,</div></div><div 
style="font-size:small">Julio</div><div style="font-size:small"><br></div><div 
style="font-size:small"><font face="monospace, monospace"><b>» Não tem tempo 
para fazer um curso presencial?</b></font></div><div 
style="font-size:small"><font face="monospace, monospace"><b>» Na sua cidade 
não tem nenhum bom curso de Linux?</b></font></div><div><font face="monospace, 
monospace" style="font-size:small"><b>» </b></font><b><font face="trebuchet ms, 
sans-serif" style="font-size:12.8px">Conheça nosso portal educacional e estude 
conosco: </font></b></div><div><b><font face="trebuchet ms, sans-serif" 
style="font-size:12.8px">     h</font><span 
style="font-size:12.8px;font-family:&quot;trebuchet 
ms&quot;,sans-serif">ttp://<a href="http://www.dicas-l.com.br/educacao/"; 
style="color:rgb(17,85,204)" 
target="_blank">www.dicas-l.com.br/educacao</a></span></b></div><div><b>»  
Treinamento presencial (<font color="#660000" 
style="background-color:rgb(255,229,153)">em 4 sábados</font>) no RJ e BSB 
</b></div><div><b>    em <a href="http://bit.ly/cursoshelljulioneves"; 
style="color:rgb(17,85,204);font-family:Verdana,Geneva,sans-serif;font-size:13.3333px"
 target="_blank">http://bit.ly/cursoshelljulioneves</a>                   
</b><img src="http://www.sindepolpb.com.br/novo3.gif"; 
style="font-size:12.8px"></div><div 
style="font-size:small"><br></div></div><div style="font-size:small"><img 
src="https://docs.google.com/uc?export=download&amp;id=1ht9llgh0CjQlapOqFtxVcSRCcopbeHYc&amp;revid=0B6Rg1uyhMVcbaVpnR2xqaXhpQ094RnNMYkZUeWhQZVZvdzFzPQ";
 width="420" height="48"><br></div><div><div style="font-size:12.8px"><span 
style="font-size:small;font-family:monospace,monospace"><font 
color="#000000"><b><br></b></font></span></div><div 
style="font-size:12.8px"><span 
style="font-size:small;font-family:monospace,monospace"><font 
color="#000000"><b>Também damos treinamento em sua 
empresa</b></font></span></div><div style="font-size:12.8px"><b 
style="font-size:12.8px"><font color="#660000" 
style="background-color:rgb(255,229,153)">em qualquer cidade</font></b><b 
style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">, 
</span></span></b><b style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">com 
certificado </span></span></b><b 
style="font-size:12.8px;color:rgb(0,0,0)"><span 
style="font-family:monospace,monospace"><span style="font-size:small">e nota 
fiscal.</span></span></b></div></div><div style="font-size:12.8px"><b 
style="color:rgb(0,0,0);font-size:12.8px"><span 
style="font-family:monospace,monospace"><span 
style="font-size:small"><br></span></span></b></div><div><div 
style="font-size:12.8px"><div style="font-size:small"><div 
style="font-family:monospace,monospace;display:inline"><font face="Bitstream 
Vera Sans, sans-serif"><font 
style="font-size:11pt"></font></font></div></div></div></div><div><blockquote 
style="font-family:arial;font-size:small;margin:0px 0px 0px 
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div 
bgcolor="#FFFFFF"><blockquote><div 
dir="ltr"></div></blockquote></div></blockquote></div>


<p style="margin-bottom:0cm"></p><div>
<p></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div
 class="gmail_quote"><div dir="ltr">Em qua, 24 de out de 2018 às 11:41, Eri 
Ramos Bastos <a href="mailto:address@hidden"; target="_blank">address@hidden</a> 
[shell-script] &lt;<a href="mailto:address@hidden"; 
target="_blank">address@hidden</a>&gt; escreveu:<br></div><blockquote 
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc 
solid;padding-left:1ex">


<u></u>









 
<div style="background-color:#fff">
<span style="display:none"> </span>


<div id="m_7350348821723749737m_-8880873497147591167ygrp-mlmsg">
  <div id="m_7350348821723749737m_-8880873497147591167ygrp-msg">


    <div id="m_7350348821723749737m_-8880873497147591167ygrp-text">
      
      
      <p></p><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Olá, 
lista!<div><br></div><div>Tenho um script que roda a seguinte função ~300 vezes 
(sourced de outro arquivo):</div><div><br></div><div><div><font 
face="monospace, monospace" size="1">check_role() {</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre-wrap">       
</span>if [ -d /etc/roles/ ]; then<br></font></div><div><font face="monospace, 
monospace" size="1"><span style="white-space:pre-wrap">          </span>if [ -f 
/etc/roles/$1 ]; then</font></div><div><font face="monospace, monospace" 
size="1"><span style="white-space:pre-wrap">                    </span>return 
0</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre-wrap">         </span>fi</font></div><div><font 
face="monospace, monospace" size="1"><span style="white-space:pre-wrap">       
</span>fi</font></div><div><font face="monospace, monospace" size="1"><span 
style="white-space:pre-wrap">       </span>return 1</font></div><div><font 
face="monospace, monospace" 
size="1">}</font></div></div><div><br></div><div>Pensei que iria ganhar 
performance fazendo isso:</div><div><br></div><div><div><font size="1" 
face="monospace, monospace">list_roles() {</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre-wrap">    </span>if [ 
-d /etc/roles/ ]; then</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">              </span>cd 
/etc/roles</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">            </span>ls</font></div><div><font 
size="1" face="monospace, monospace"><span style="white-space:pre-wrap">       
</span>else</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">             </span>echo 
&quot;&quot;</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">        </span>fi</font></div><div><font size="1" 
face="monospace, monospace"><br></font></div><div><font size="1" 
face="monospace, monospace">}</font></div><div><font size="1" face="monospace, 
monospace"><br></font></div><div><font size="1" face="monospace, 
monospace">export ROLES=($(list_roles))</font></div></div><div><div><font 
size="1" face="monospace, monospace">check_role() {</font></div><div><font 
size="1" face="monospace, monospace"><span style="white-space:pre-wrap">        
</span>local role=$1<br></font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">        </span>for r in 
&quot;${ROLES[@]}&quot;; do</font></div><div><font size="1" face="monospace, 
monospace"><span style="white-space:pre-wrap">             </span>[[ 
&quot;$r&quot; == &quot;$role&quot; ]] &amp;&amp; return 
0</font></div><div><font size="1" face="monospace, monospace"><span 
style="white-space:pre-wrap">    </span>done</font></div><div><font size="1" 
face="monospace, monospace"><span style="white-space:pre-wrap">     
</span>return 1</font></div><div><font size="1" face="monospace, 
monospace"><br></font></div><div><font size="1" face="monospace, 
monospace">}</font></div></div><div><br></div><div>Mas na verdade o tempo de 
execução piorou:</div><div><br></div><div>Original:</div><div><span 
style="font-family:monospace">real    0m2.069s </span><br 
style="font-family:monospace"><span style="font-family:monospace">user    
0m0.300s </span><br style="font-family:monospace"><span 
style="font-family:monospace">sys     0m1.644s</span><span 
style="font-family:monospace"><br></span></div><div><span 
style="font-family:monospace"><br></span></div><div><font face="arial, 
helvetica, sans-serif">Novo:<br></font><font face="monospace">real    0m2.857s
</font><br><font face="monospace">user    0m0.348s
</font><br><font face="monospace">sys     0m2.296s
</font><br><br><br>
<font face="arial, helvetica, sans-serif">Me parece contra-intuitivo, já que o 
original precisa checar em disco todas as vezes. Onde estou 
errado?</font></div><div><font face="arial, helvetica, 
sans-serif"><br></font></div><div><font face="arial, helvetica, 
sans-serif">Obrigado!</font></div><div><br></div></div></div></div></div>
<p></p>

    </div>
     

    
    <div style="color:#fff;height:0"></div>


</div>



  






</div></div></blockquote></div>






<br>


<br>




<div width="1" style="color:white;clear:both"></div>



</blockquote></div></div>

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