On Thu, 28 Oct 2010 19:28:26 +0200, Polytropon <free...@edvax.de> wrote:
> On Thu, 28 Oct 2010 09:17:12 -0700, Chip Camden <sterl...@camdensoftware.com>
> wrote:
> > Perhaps someone with more sh fu can transform the
> > 'if' paragraph into a one-liner at least. When I tried to do so, I got an
> > unexpected ; error.
>
> Not tested, but this should do the trick:
>
> #!/bin/sh
> if [ $# -ge 1 ] && ( exec cat $@ | $0; exit )
> while read data; do echo $data; done
Attention - does NOT work! Maybe my sh fu is just shhh foo. :-)
#!/bin/sh
[ $# -ge 1 ] && ( exec cat $@ | $0; exit )
while read data; do echo $data; done
THIS is better. You can see that "if" has been removed, leaving
a call to the program "test" (/bin/test is /bin/[), as long as
sh does not use a built-in test or [ mechanism. The "if" is not
neccessary here, as the if-then-fi construct is implicated by
the use of &&.
Tested. Works.
--
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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