Man1 - xzgrep.1

xzgrep - search compressed files for a regular expression

xzgrep [/grep_options/] [*-e*] pattern file…
xzegrep …
xzfgrep …
lzgrep …
lzegrep …
lzfgrep …

xzgrep invokes *grep*(1) on files which may be either uncompressed or compressed with *xz*(1), *lzma*(1), *gzip*(1), *bzip2*(1), or *lzop*(1). All options specified are passed directly to *grep*(1).

If no file is specified, then standard input is decompressed if necessary and fed to *grep*(1). When reading from standard input, *gzip*(1), *bzip2*(1), and *lzop*(1) compressed files are not supported.

If xzgrep is invoked as xzegrep or xzfgrep then egrep*(1) or *fgrep*(1) is used instead of *grep*(1). The same applies to names *lzgrep, lzegrep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

GREP

If the GREP environment variable is set, xzgrep uses it instead of *grep*(1), *egrep*(1), or *fgrep*(1).

*grep*(1), *xz*(1), *gzip*(1), *bzip2*(1), *lzop*(1), *zgrep*(1)