Awk

De Linuxmemo.

awk 'instructions' files

awk -f script files

Awk, in the usual case, interprets each input line as a record and each word on that line, delimited byspaces or tabs, as a field. (These defaults can be changed.) One or more consecutive spaces or tabs count as a single delimiter. Awk allows you to reference these fields, in either patterns or procedures. $0 represents the entire input line. $1, $2, ... refer to the individual fields on the input line.

awk '{ print $1 }' list
John
Alice
Orville