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+.\" Original file was take from gzip, thus this man page is under GNU GPLv2+.
+.TH XZGREP 1 "2009-04-13" "XZ Utils"
+.SH NAME
+xzgrep \- search .xz and .lzma compressed files for a regular expression
+.SH SYNOPSIS
+.B xzgrep
+.RI [ grep_options ]
+.RB  [ \-e ]
+.I pattern
+.IR filename ".\|.\|."
+.br
+.B xzegrep
+.RB ...
+.br
+.B xzfgrep
+.RB ...
+.br
+.B lzgrep
+.RB ...
+.br
+.B lzegrep
+.RB ...
+.br
+.B lzfgrep
+.RB ...
+.SH DESCRIPTION
+.B  xzgrep
+is used to invoke the
+.BR grep (1)
+on .xz or .lzma compressed files. All options specified are passed directly to
+.BR 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
+.BR grep .
+.PP
+If
+.B xzgrep
+is invoked as
+.B xzegrep
+or
+.B xzfgrep
+then
+.B egrep
+or
+.B fgrep
+is used instead of
+.B grep.
+The same applies to names
+.BR lzgrep ,
+.BR lzegrep ,
+and
+.BR lzfgrep ,
+which are provided for backward compatibility with LZMA Utils.
+
+If the GREP environment variable is set,
+.B xzgrep
+uses it as the
+.B grep
+program to be invoked. For example:
+
+    for sh:  GREP=fgrep  xzgrep string files
+    for csh: (setenv GREP fgrep; xzgrep string files)
+.SH AUTHORS
+Original
+.BR zgrep (1)
+manual page by Charles Levert <charles@comm.polymtl.ca>.
+.PP
+Minor modifications for XZ Utils by Lasse Collin
+<lasse.collin@tukaani.org>.
+.SH "SEE ALSO"
+.BR grep (1),
+.BR egrep (1),
+.BR fgrep (1),
+.BR xzdiff (1),
+.BR xzmore (1),
+.BR xz (1)