Another varient on the -pi.bak -e ("pi bake") schemata, but using the powers of the "ni bake":

perl -ni.bak -e'print if /^s/'

perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^+*`^ ve^#$&V"+@( NO CARRIER'

In reply to Re: Wish to keep only those lines which start with letter s, and delete all other lines. by Chmrr
in thread Wish to keep only those lines which start with letter s, and delete all other lines. by Anonymous Monk

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