zegrep
Find extended regular expression patterns in compressed files using `egrep`.
TLDR
Search for extended regular expressions (supporting ?, +, {}, () and |) in a compressed file (case-sensitive)
Search for extended regular expressions (supporting ?, +, {}, () and |) in a compressed file (case-insensitive)
Search for lines that do not match a pattern
Print file name and line number for each match
Search for lines matching a pattern, printing only the matched text
Recursively search files in a compressed file for a pattern
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename. . .
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. All options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT STATUS
Exit status is 0 for a match, 1 for no matches, and 2 if trouble.
BUGS
The following grep options are not supported: --dereference-recursive (-R), --directories (-d), --exclude, --exclude-from, --exclude-dir, --include, --null (-Z), --null-data (-z), and --recursive (-r).
SEE ALSO
AUTHOR
Charles Levert (charles@comm.polymtl.ca)