On 09/09/2013 07:12 AM, Martin Gignac wrote: >> I must admit, that I don't know the 'qt mywhich' combo. But may I ask >> why you don't use 'hash'? > > mywhich() is a function in lib.common which (I guess) emulates the > behavior of 'which', and qt() is another function which send the > STDOUT and STDERR of a command to /dev/null. There are many instances > of 'qt mywhich' being used in lib.cli when there is a check for the > existence of an executable. > > I was initially going to use 'command -v foo >/dev/null 2>&1' as > suggested by this page: > > http://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script > > but then decided to use 'qt mywhich' instead since I'd seen it used > many times already in 'lib.cli'. > > The most popular answer in the Stack Overflow link above suggests that > using 'command -v' is POSIX compliant and would give more consistent > results than 'hash'.
The 'qt mywhich' paradigm dates back 15 years to when I first wrote Seawall (predecessor to Shorewall). As Martin says, 'mywhich' emulates 'which'. -Tom -- Tom Eastep \ When I die, I want to go like my Grandfather who Shoreline, \ died peacefully in his sleep. Not screaming like Washington, USA \ all of the passengers in his car http://shorewall.net \________________________________________________
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