For my & others' reference (because I keep having to look it up, just like parent):

    perl -ne "print $_;"

'-n' will run the expression over each line of the input. This is the Awk-like mode.

    perl -pe "s/foo/bar/"

'-p' will run the expression over each line of input, and print out the (possibly modified) line. This is the Sed-like mode.

Slightly more info available in `man perlrun` or https://perldoc.perl.org/perlrun.html