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Re: TZ=... date affected PROMPT_COMMAND

From: Matthew Woehlke
Subject: Re: TZ=... date affected PROMPT_COMMAND
Date: Wed, 16 Apr 2008 11:41:57 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20080213 Thunderbird/ Mnenhy/

address@hidden wrote:
Never thought that putting TZ here would infect my prompt,

21:07 ~$ date
Wed Apr 16 21:07:54 CST 2008
21:07 ~$ TZ=America/Chicago date
Wed Apr 16 08:08:07 CDT 2008
08:08 ~$ set a b c
08:08 ~$ date
Wed Apr 16 21:08:22 CST 2008
21:08 ~$

all the way until the next non built-in command.
Need to do sh -c 'TZ=America/Chicago date'
if one doesn't want their prompt affected.

You didn't mention what version of bash you are using. I was unable to reproduce this on 3.00.15 or 3.2.5.

(On the other hand, what I do in .bashrc is black magic to me too:)
PROMPT_COMMAND='prompt_tricks_z=" $?"; prompt_tricks_z=${prompt_tricks_z# 0}

Well, you could always read the bash manual to decipher the above :-). I'll leave that as an exercise for you; the function of the above is actually very straight-forward.

 case $PWD in $HOME) pwd=\~;; *) pwd=${PWD##*/};; esac' #cfaj.freeshell.org

This part is unneeded. If I understand it correctly, you could remove this line and replace '\$pwd' in your PS1 with \W to achieve the same effect.

> pinotree uses the large trout on tsdgeos and PutHuhn :)
> PutHuhn runs
> tsdgeos lights a fire and eats the trout
(with apologies to Pino Toscano, PutHuhn and Albert Astals Cid, who came up with this entirely on their own)

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