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-.TH ZGREP 1
-.SH NAME
-zgrep \- search possibly compressed files for a regular expression
-.SH SYNOPSIS
-.B zgrep
-[ grep_options ]
-.BI [\ -e\ ] " pattern"
-.IR filename ".\|.\|."
-.SH DESCRIPTION
-.IR Zgrep
-is used to invoke the
-.I grep
-on compress'ed or gzip'ed files. All options specified are passed directly to
-.I 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
-.I grep.
-.PP
-If
-.I zgrep
-is invoked as
-.I zegrep
-or
-.I zfgrep
-then
-.I egrep
-or
-.I fgrep
-is used instead of
-.I grep.
-If the GREP environment variable is set,
-.I zgrep
-uses it as the
-.I grep
-program to be invoked. For example:
-
- for sh: GREP=fgrep zgrep string files
- for csh: (setenv GREP fgrep; zgrep string files)
-.SH AUTHOR
-Charles Levert (charles@comm.polymtl.ca)
-.SH "SEE ALSO"
-grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1),
-gzip(1), gzexe(1)