", split/|/, $_)'File ManipulationInsert line numbers:perl -i -ne 'printf "%04d %s", $.
, $_'Reverse lines of file abc.
txt and print it:perl -e 'print reverse <>' abc.
txtIncrement all numbers in abc.
txt by 1:perl -pe 's/(d+)/ 1 + $1 /ge' abc.
txtColumns and Rows ProcessingPrinting columns 1–5:perl -F" " -nlae'print join " ", @F[0.
4]'Printing individual columns, 1, 3, last:perl -F" " -nlae'print join " ", @F[0,2,-1]'Print selective lines numbered 12, 20, 27:perl -ne 'print if $.
==12 || $.
==20 || $.
==27'Print all lines from line 18 to line 29:perl -ne 'print if $.
>=18 && $.
<=29'Print all lines between two patterns:perl -ne 'print if (/^START/.
/^END/);'Armed with this list of powerful perl commands to clean up your data, go and be the programmer or the data scientist that you are.
.