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Keep in mind that modern versions of Perl added some extra goodies to the -i value (from perlrun):
If the extension doesn't contain a "*", then it is appende +d to the end of the current filename as a suffix. If the extension + does contain one or more "*" characters, then each "*" is repla +ced with the current filename. In Perl terms, you could think of t +his as: ($backup = $extension) =~ s/\*/$file_name/g; This allows you to add a prefix to the backup file, instea +d of (or in addition to) a suffix: $ perl -pi'orig_*' -e 's/bar/baz/' fileA # backup t +o 'orig_fileA' Or even to place backup copies of the original files into +another directory (provided the directory already exists): $ perl -pi'old/*.orig' -e 's/bar/baz/' fileA # backup +to 'old/fileA.orig'

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to Re^2: Not able Create Backup file when using INPLACE_EDIT ( $^I ) by merlyn
in thread Not able Create Backup file when using INPLACE_EDIT ( $^I ) by jesuashok

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