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Full Discussion: grep output clarification
Top Forums UNIX for Advanced & Expert Users grep output clarification Post 302302218 by Corona688 on Monday 30th of March 2009 11:36:48 AM
Old 03-30-2009
Quote:
Originally Posted by rajp_8007
Then wht is the meaning of "." and "\."
To the shell?

In a shell, . is used for globbing, which is similar but not the same as what grep does. Globbing is what lets you 'ls *' and get anything useful. The shell uses backslashes to mean to "take the next character literally", also much like in grep. But since the shell does command separation and grep does not it's useful in other places. For example if you have a filename with spaces, you can specify it like filename\ with\ spaces to avoid needing single or double quotes.
 

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LEARN ABOUT XFREE86

zgrep

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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