.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 .I Zgrep invokes .I grep on compressed or gzipped files. All options specified are passed directly to .IR 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 .IR grep . .PP If the GREP environment variable is set, .I zgrep uses it as the .I grep program to be invoked. .SH AUTHOR Charles Levert (charles@comm.polymtl.ca) .SH "SEE ALSO" grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)