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Robrt (1414)

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robert at perl dot org

Journal of Robrt (1414)

Monday August 04, 2003
06:12 PM

Shell Golf

[ #13906 ]

I played shell golf with myself today. (I won.)

I started with
echo $PATH | perl -F: -lane'$,="\n"; print @F'
and Ask intervened with
perl -e'print join"\n",split(/:/,$ENV{PATH}),""'
claiming it was "the same length and is using more common idioms.". I noted that his was a lot more typing and punctuation, and mine is mostly whitespace.

I shifted into Awk for a few cycles:
echo $PATH | awk 'BEGIN{RS=":"} {print}'
echo $PATH | awk -vRS=: '{print}'

but what I really wanted was sed. I settled with perl
echo $PATH | perl -pe's/:/\n/g'
after determining that tcsh was breaking sed.

echo $PATH | tr : '\n'
I win.

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