# phpman > info > xzgrep

[XZGREP(1)](https://www.chedong.com/phpMan.php/man/XZGREP/1/markdown)                          XZ Utils                          [XZGREP(1)](https://www.chedong.com/phpMan.php/man/XZGREP/1/markdown)

NAME
       xzgrep - search compressed files for a regular expression

SYNOPSIS
       xzgrep [grep_options] [-e] pattern file...
       xzegrep ...
       xzfgrep ...
       lzgrep ...
       lzegrep ...
       lzfgrep ...

DESCRIPTION
       xzgrep  invokes  [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown)  on  files which may be either uncompressed or
       compressed with [xz(1)](https://www.chedong.com/phpMan.php/man/xz/1/markdown), [lzma(1)](https://www.chedong.com/phpMan.php/man/lzma/1/markdown), [gzip(1)](https://www.chedong.com/phpMan.php/man/gzip/1/markdown), [bzip2(1)](https://www.chedong.com/phpMan.php/man/bzip2/1/markdown), [lzop(1)](https://www.chedong.com/phpMan.php/man/lzop/1/markdown), or [zstd(1)](https://www.chedong.com/phpMan.php/man/zstd/1/markdown).
       All options specified are passed directly to [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown).

       If  no file is specified, then standard input is decompressed if neces-
       sary and fed to [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown).  When reading from  standard  input,  [gzip(1)](https://www.chedong.com/phpMan.php/man/gzip/1/markdown),
       [bzip2(1)](https://www.chedong.com/phpMan.php/man/bzip2/1/markdown), [lzop(1)](https://www.chedong.com/phpMan.php/man/lzop/1/markdown), and [zstd(1)](https://www.chedong.com/phpMan.php/man/zstd/1/markdown) compressed files are not supported.

       If xzgrep is invoked as xzegrep or xzfgrep then [egrep(1)](https://www.chedong.com/phpMan.php/man/egrep/1/markdown) or [fgrep(1)](https://www.chedong.com/phpMan.php/man/fgrep/1/markdown) is
       used instead of [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown).  The same applies to  names  lzgrep,  lzegrep,
       and  lzfgrep,  which  are provided for backward compatibility with LZMA
       Utils.

ENVIRONMENT
       GREP   If the GREP environment variable is set, xzgrep uses it  instead
              of [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown), [egrep(1)](https://www.chedong.com/phpMan.php/man/egrep/1/markdown), or [fgrep(1)](https://www.chedong.com/phpMan.php/man/fgrep/1/markdown).

SEE ALSO
       [grep(1)](https://www.chedong.com/phpMan.php/man/grep/1/markdown), [xz(1)](https://www.chedong.com/phpMan.php/man/xz/1/markdown), [gzip(1)](https://www.chedong.com/phpMan.php/man/gzip/1/markdown), [bzip2(1)](https://www.chedong.com/phpMan.php/man/bzip2/1/markdown), [lzop(1)](https://www.chedong.com/phpMan.php/man/lzop/1/markdown), [zstd(1)](https://www.chedong.com/phpMan.php/man/zstd/1/markdown), [zgrep(1)](https://www.chedong.com/phpMan.php/man/zgrep/1/markdown)

Tukaani                           2020-12-05                         [XZGREP(1)](https://www.chedong.com/phpMan.php/man/XZGREP/1/markdown)