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EGREP

Posted On 2007-04-30 by FortyPoundHead
Keywords: Command Reference
Tags: Linux Commandline Linux
Views: 1458


Search file(s) for lines that match an extended expression (extended grep)

SYNTAX
egrep [ options ] ''PATTERN'' files ...

egrep is the same as `grep -E''

all other options are the same as grep

The PATTERN is a regexp. In typical usage, the regexp is quoted to
prevent the shell from expanding any of the special characters as file
name wildcards. Normally, `egrep'' prints the lines that matched. If
multiple file names are provided on the command line, each output line
is preceded by the name of the file and a colon.

OPTIONS

`-c''
Print out a count of the lines that matched the pattern, instead
of the lines themselves.

`-s''
Be silent. No output is produced, and the exit value indicates
whether or not the pattern was matched.

`-v''
Invert the sense of the test. `egrep'' prints the lines that do
*not* match the pattern, and exits successfully if the pattern was
not matched.

`-i''
Ignore case distinctions in both the pattern and the input data.

`-l''
Only print the names of the files that matched, not the lines that
matched.

`-e PATTERN''
Use PATTERN as the regexp to match. The purpose of the `-e''
option is to allow patterns that start with a `-''.


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