Re: SHELLOPTS=xtrace security hardening

[Chet Ramey]

On 12/15/15 11:37 AM, up201407890@alunos.dcc.fc.up.pt wrote:

>> You just need to enable history (set -o history).  History is independent
>> of whether or not the shell is interactive; it's just enabled by default
>> in interactive shells.
> 
> doing a "set -o history" didn't work for me, only when i added a "history
> -a" eg:

$ cat x19
#!/bin/bash

rm -f /tmp/history      # make sure it's not there

set -o history
HISTFILE="/tmp/history"
HISTSIZE="1000"

printf 'something\n'
$ ../bash-4.3-patched/bash ./x19
something
$ ls -l /tmp/history
-rw-------  1 chet  wheel  61 Dec 15 11:48 /tmp/history
$ cat /tmp/history
HISTFILE="/tmp/history"
HISTSIZE="1000"
printf 'something\n'



-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/