On 2007/07/17 16:07, Paul de Weerd wrote: > On Tue, Jul 17, 2007 at 03:42:53PM +0200, frantisek holop wrote: > | i have found a script on hp-ux that uses > | [[ ]] instead of the if [ ]; then construct > | so i went to sh(1), and while [[ is listed > | as a compound command, i couldn't find any > | explanation of what it does and how is it > | different if at all. > | > | could the doc experts advise please and > | update the docs? > > My manpage (ksh(1)) says : > > [[ expression ]] > Similar to the test and [ ... ] commands (described later), with > the following exceptions: > > And then lists some exceptions. This could be a difference between sh > and ksh (which, I believe, is only a difference in documentation).
It does different things depending on whether it's run as ksh or sh.
