plan9 man page for grep

Query: grep

OS: plan9

Section: 1

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output. The options are -c Print only a count of matching lines. -h Do not print file name tags (headers) with output lines. -i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre- tation. Matched lines are printed in their original form. -l (ell) Print the names of files with selected lines; don't print the lines. -L Print the names of files with no selected lines; the converse of -l. -n Mark each printed line with its line number counted in its file. -s Produce no output, but return status. -v Reverse: print lines that do not match the pattern. Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name argument.) Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(6)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs. GREP(1)
Related Man Pages
egrep(1) - osx
grep(1) - plan9
plan9-grep(1) - debian
fmlgrep(1f) - sunos
bzfgrep(1) - osx
Similar Topics in the Unix Linux Community
Print rows, having pattern in specific column...
Looking for an awk command to print strings only if substring is missing
awk pattern matching
Grep not working on mac
Want to extract certain lines from big file