History

Ben Gras 5518fe9be1 grep - letting calloc() return NULL for 0 storage makes grep "" work		2011-02-20 13:34:53 +00:00
..
binary.c	grep: unsigned chars to fix gcc warnings.	2010-06-20 12:31:55 +00:00
file.c	fixes for minix grep	2010-06-20 11:55:19 +00:00
grep.1	original openbsd grep (freegrep)	2010-06-20 11:54:40 +00:00
grep.c	fixes for minix grep	2010-06-20 11:55:19 +00:00
grep.h	grep: unsigned chars to fix gcc warnings.	2010-06-20 12:31:55 +00:00
Makefile	Rename mkfiles from minix..mk to bsd..mk	2010-06-25 18:29:09 +00:00
mmfile.c	fixes for minix grep	2010-06-20 11:55:19 +00:00
queue.c	original openbsd grep (freegrep)	2010-06-20 11:54:40 +00:00
readme.md	original openbsd grep (freegrep)	2010-06-20 11:54:40 +00:00
util.c	grep - letting calloc() return NULL for 0 storage makes grep "" work	2011-02-20 13:34:53 +00:00

readme.md

FreeGrep

The grep utility searches any given input files, selecting lines that match one or more patterns. By default, a pattern matches an input line if the regular expression in the pattern matches the input line without its trailing newline. An empty expression matches every line. Each input line that matches at least one of the patterns is written to the standard output. grep is used for simple patterns and basic regular expressions; egrep can handle extended regular expressions. fgrep is quicker than both grep and egrep, but can only handle fixed patterns (i.e. it does not interpret regular expressions). Patterns may consist of one or more lines, allowing any of the pattern lines to match a portion of the input. zgrep, zegrep, and zfgrep act like grep, egrep, and fgrep, respectively, but accept input files compressed with the compress or gzip compression utilities.