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45 lines
958 B
Groff
45 lines
958 B
Groff
.TH ZGREP 1
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.SH NAME
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zgrep \- search possibly compressed files for a regular expression
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.SH SYNOPSIS
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.B zgrep
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[ grep_options ]
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.BI [\ -e\ ] " pattern"
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.IR filename ".\|.\|."
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.SH DESCRIPTION
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.IR Zgrep
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is used to invoke the
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.I grep
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on compress'ed or gzip'ed files. All options specified are passed directly to
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.I grep.
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If no file is specified, then the standard input is decompressed
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if necessary and fed to grep.
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Otherwise the given files are uncompressed if necessary and fed to
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.I grep.
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.PP
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If
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.I zgrep
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is invoked as
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.I zegrep
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or
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.I zfgrep
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then
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.I egrep
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or
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.I fgrep
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is used instead of
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.I grep.
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If the GREP environment variable is set,
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.I zgrep
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uses it as the
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.I grep
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program to be invoked. For example:
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for sh: GREP=fgrep zgrep string files
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for csh: (setenv GREP fgrep; zgrep string files)
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.SH AUTHOR
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Charles Levert (charles@comm.polymtl.ca)
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.SH "SEE ALSO"
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grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1),
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gzip(1), gzexe(1)
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