My mnemonic for the perl switches is "perl dash lane", i.e. `perl -lane`. And then I remember to replace "n" with "p" if I want to auto-print every line after m

My mnemonic for the perl switches is "perl dash lane", i.e. `perl -lane`. And then I remember to replace "n" with "p" if I want to auto-print every line after munging it. I mainly use this as a replacement for sed/awk/grep because PCRE syntax is more familiar to me than whatever flavor(s) of regexes are used by those tools.