2.6. shell:grep, grep

Abstract

displays lines matching a regular expression

Synopsis

shell:grep [ --help ] [[ -i ] | [ --ignore-case ]] [[ -w ] | [ --word-regexp ]] [[ -n ] | [ --line-number ]] [[ -x ] | [ --line-regexp ]] [[ -v ] | [ --invert-match ]] { regex }

Arguments

Table 2.6, “shell:grep Arguments” describes the command's arguments.

Table 2.6. shell:grep Arguments

ArgumentInterpretation
--help Displays the online help for this command.
-i, --ignore-case Ignore case distinctions in both the regex and the input files.
-w, --word-regexp
Select only lines containing matches that form whole words.
A match qualifies if it meets one of the following conditions:
  • The matching string is at the beginning of the line.
  • The matching string is preceded by a non-word constituent character.
  • The matching string is at the end of the line.
  • The matching string is followed by a non-word constituent character.
-n, --line-numberDisplay the line number of the match within its input file.
-x, --line-regexp Selects only those matches that exactly match the whole line.
-v, --invert-match Select non-matching lines.
regex Specifies the regular expression to match.