On Tue, Nov 10, 2009 at 02:23:25PM -0600, Dan McGee wrote: > On Tue, Nov 10, 2009 at 2:20 PM, Cedric Staniewski <[email protected]> wrote: > > > > It might be enough, but I wonder, as well, why the -p option is used. I > > removed it in my patch since it is not needed when testing the return code, > > but maybe I missed something. > > dmc...@galway ~/projects/pacman (gpg-more) > $ type -p xdelta3; echo $? > 1 > > dmc...@galway ~/projects/pacman (gpg-more) > $ type xdelta3; echo $? > -bash: type: xdelta3: not found > 1 > > Note that -p suppresses error messages that you may not want; it's > output is only the return code. > > -Dan >
The -p only suppresses error messages (STDERR) when it fails. On success it still emits the path to the file on disk (STDOUT). If you want to do the test like this: $ if [ -n "$(type -p xdelta3)" ] ; then then that is the desired behaviour. Output on success, nothing on failure. If you want to just use the return status, you still need to do something with the STDOUT. $ if type -p xdelta3 >/dev/null ; then or $ if type xdelta3 >/dev/null 2>&1 ; then
