How to remove unwanted lines from file.

Hi,

I want to remove some lines containing some specific characters in a
file.

I can easily do it using grep redirecting the output to some other file
and renaming the new file with source file name

In Shell

---------------

cat Sourcefile | grep -v "ignorestring" > newfile

mv newfile Sourcefile

Is there any command line "One liner"; available to do the same in Perl
without having to create new file and renaming it back?

Thanks in advance for any help.

Ramesh Polepalli

mFormation Technologies Inc.
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>>&gt;>> "Ramesh" == Ramesh Polepalli < ramesh.polepalli%40mformation.com">ramesh.polepallimformation.com> writes:

Ramesh&gt; cat Sourcefile | grep -v "ignorestring&quot; > newfile

That's a "useless use of cat" - grep for that for details.

Ramesh&gt; mv newfile Sourcefile

Ramesh> Is there any command line "One liner"; available to do the same in Perl
Ramesh> without having to create new file and renaming it back?

Yes, it's called "in-place editing&quot;, and is described on "perldoc perlrun&quot;
under the "-i&quot; switch. If you have any questions after reading that
document, please ask again.

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Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
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