Perl One Liners

• -e enable expression
• -n loop over input
• -l strip newlines on input, but print them out with output
• -a enable autosplit, resulting in array @F

For example, say you have a tab delimited file of oligo sequences, with id in the 4th column, and sequence in the 5th column, and you want to convert it to a fasta file:

perl -nale 'print ">$F[3]\n$F[4]"' inputfile.txt