Re^2: pattern match -vs- *ix grep

Sillyness. Anyone typing in

    $ snippet.pl '| rm -rf *' 'ouch'
[download]

could as well have typed

    $ rm -rf *
[download]

No point in checking the arguments.

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Re^3: pattern match -vs- *ix grep by VSarkiss (Monsignor) on Apr 07, 2005 at 17:05 UTC
You're missing the point. In addition to any performance differences, the snippet has other subtle differences from `grep`, some of which are undesirable. Typing `$ grep '\| rm -rf ' 'ouch'` [download] would not have done anything unexpected at all. If you want to demonstrate that a simple Perl program is better or faster than a long-standing utility, you need to put more thought into what that utility does. Otherwise the comparison is unfair or meaningless. Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.*	[reply] [d/l] [select]

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Re^3: pattern match -vs- *ix grep
by VSarkiss (Monsignor) on Apr 07, 2005 at 17:05 UTC

You're missing the point. In addition to any performance differences, the snippet has other subtle differences from grep, some of which are undesirable. Typing

$ grep '| rm -rf *' 'ouch'
[download]

If you want to demonstrate that a simple Perl program is better or faster than a long-standing utility, you need to put more thought into what that utility does. Otherwise the comparison is unfair or meaningless.

Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.

[reply]
[d/l]
[select]