in-place edit, regex, one-liner

ybiC has asked for the wisdom of the Perl Monks concerning the following question:

I'm trying to replace all instances of img src="image.gif" with img src="/Images/image.gif" in about 100 HTML documents. Below is what I've come up with, which creates the .bak file properly, but leaves a zero-byte edited file. What am I overlooking?

perl -i.bak -n -e 's/img src=\"image\.gif\"/img src=\"\/Images\/image\.gif\"/g' file.html

    cheers,
    Don
    striving for Perl Adept
    (it's pronounced "why-bick")

Comment on in-place edit, regex, one-liner

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Re: in-place edit, regex, one-liner by mdillon (Priest) on Nov 24, 2000 at 01:22 UTC
you're using '-ne', but not printing anything at the end of the evaluated code. try '-pe' or add a 'print;' to the end of your code, as appropriate.	[reply]
Re: (2) in-place edit, regex, one-liner (perl -i.bak -pe) by ybiC (Prior) on Nov 24, 2000 at 01:44 UTC
Woo-hoo! `-pe` instead of `-ne` did the trick! Thanks a bunch, mdillon. `perl -i.bak -pe 's/img src=\"image\.gif\"/img src=\"\/Images\/image\.gif\"/g' file.html` Here's that syntax sans toothpicks: `perl -i.bak -pe 's///g' .html` cheers, Don striving for Perl Adept* (it's pronounced "why-bick")	[reply]
Re: Re: (2) in-place edit, regex, one-liner (perl -i.bak -pe) by chromatic (Archbishop) on Nov 24, 2000 at 03:02 UTC
I think you can cut that down a bit. `perl -pe -i.bak 's!(img src=")(image\.gif")!$1/Images/$2!g' *.html` (I haven't tested it, but I think it's okay.)	[reply] [d/l]
(code) Re: (4) in-place edit, regex, one-liner (Mo' Betta) by ybiC (Prior) on Nov 24, 2000 at 03:52 UTC


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