On Mon, 29 Jul 2013 14:25:08 +0100
Paul Macdonald wrote:
>
> Hi, I spotted what i'd call an unusual file in the basejail on a jail
> install, and have since seen this on other non jailed boxes.
>
> -r-xr-xr-x 2 root wheel 11488 Jun 10 12:19 [
>
> man [ reveals
>
> test, [ -- condition evaluation utility
>
> just checking thats all ok, and i've not been rooted!
The idea was to make shell scripts more readable as you can have
something like:
if [ ${x} -gt 1 ] ...
[ is a hard-link to /bin/test and the closing] "]" is its last argument.
In most modern shells its a builtin feature and /bin/[ isn't used.
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