Referencia rapida para procesar texto en terminal con grep, awk, cut, sort, uniq, wc, tee y xargs.
grep.awk o cut.sort.uniq -c.xargs.grep '{PATTERN}' {FILE}
grep -i '{PATTERN}' {FILE}
grep -R '{PATTERN}' {DIR}
grep -n '{PATTERN}' {FILE}
grep -v '{PATTERN}' {FILE}