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Full Discussion: Grep with wildcard
Top Forums Shell Programming and Scripting Grep with wildcard Post 303036269 by abdossamad2003 on Friday 21st of June 2019 08:14:03 AM
Old 06-21-2019
Many thanks
how can i find any help for regex e.g in "man command in terminal"?

test is:
somethin

somethina

somethinabc

something

somethinggg



Code:
grep "something*" test

Code:
somethin
somethina
somethinabc
something
somethinggg

somethina !?
somethinabc !?


but
Code:
grep "something?" test

no thing find
 

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ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to 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 grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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