in reply to Re: reading/writing line by line
in thread reading/writing line by line

I fear this is an especially dumb question, but here goes...

I've seen a lot of people recommending the "perl -i" solution for regexes, like your 
perl -i.backup -pe 's/foo/bar/g' filename

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Can that be used for multiple regexes in a file? Like, if you wanted to do s/foo/bar/g and s/y/yah/g on the same file?

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Re: Re: Re: reading/writing line by line
by amarceluk (Beadle) on May 22, 2002 at 19:42 UTC
    I rescind the question. Yes, it's dumb, and yes, I figured it out by doing a search for "perl -i". Sorry.
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Re: Re: Re: reading/writing line by line
by Juerd (Abbot) on May 22, 2002 at 19:44 UTC

    Can that be used for multiple regexes in a file? Like, if you wanted to do s/foo/bar/g and s/y/yah/g on the same file?

    Yes. See what happens if you use just perl -pe'undef': 

    LINE: while (defined($_ = <ARGV>)) {
    undef;
}
continue {
    die "-p destination: $!\n" unless print $_;
}

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    So you can just add whatever should be inside the block: 
    perl -i -pe's/foo/bar/g; s/y/yah/g;' filename

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    - Yes, I reinvent wheels.
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      Thank you! I figured there had to be a way to do it but it wasn't intuitively obvious.
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