Re: Variable substitution

If you're indeed using `perl -e ...` from inside perl, you need to add an extra layer of backslashes, as you're forgetting to protect against the extra interpolation due to the shell: you're running perl, invoking the shell (``) which in turn invokes perl. And your variables, esp. $_ hopefully is something very simple that parses as a single shell word.

(In case you're invoking `perl` from a shell script, just export $file, and you can then access the variable's content in Perl using $ENV{file})

Either way, do consider using single quotes instead of your double quote: `perl -e '...'`, which allows you to get rid of some backslashes...

HTH
Peter

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Re^2: Variable substitution by roboticus (Chancellor) on Oct 21, 2009 at 05:06 UTC
jakobi: I'd suggest this edit: `s/add an extra.*/be whacked with a cluestick!/` [download] </snarky_mode> ...roboticus	[reply] [d/l]
Re^3: Variable substitution by jakobi (Pilgrim) on Oct 21, 2009 at 10:00 UTC
But your regex contains .* and this results in just the four letter word RTFM, which I hate with a passion in its standalone version. Shouldn't we all remember that RTFM is a protocol prefix and requires an obligatorie MEME URI which provides at least an additional hint or keyword? So the proper use should be a still sufficiently terse RTFM://<check_both_quoting_and_consider_rethinking_your_approach>. ;> Peter (who is a bit ashamed to have failed roboticus' elegance & brevity test)	[reply]