Perl command-line common methods

A. Original text replacement

Perl-p-i.bak-e "s/source string/target string/g" < file name >

The original text is backed up as a. bak suffix file

B. Regular packet Extraction

echo "Tom and dic" | Perl-n-E ' @w =/(Tom). * (DIC)/; print "$w [0] & $w [1]" '

Print "Tom & DiC"

Note:-p Prints the string to output that satisfies the regular

-N does not print the string to the output, only the statements such as program print

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Perl command-line common methods