nawk-pattern scanning and processing language

nawk ”pattern scanning and processing language

 nawk [ F re ] [ v var=value ] [ 'prog' ] [ filename ... ] nawk [ F re ] [ v var=value ] [ f progfile ][ filename ... ] 

nawk scans each input filename for lines that match any of a set of patterns. The command string must be enclosed in single quotes ( ' ) to protect it from the shell. Awk programs consist of a set of pattern/action statements used to filter specific information from a file, pipe, or stdin .