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Full Discussion: Trying to grep for '--' occurance
Top Forums Shell Programming and Scripting Trying to grep for '--' occurance Post 302531340 by bludhemn on Thursday 16th of June 2011 12:18:55 PM
Old 06-16-2011
Quote:
Originally Posted by SteveDawe
Try this line instead as the --md5 is being mistaken for a command line and the quotes may help too.

Code:
if grep -Fxq -- "$GRUBPASSWD" /etc/grub.conf

This worked...thank you!!

Quote:
Originally Posted by Corona688
How about '[-]-md5' ? The square brackets convince grep that it's not an option without altering the meaning of the expression. This trick's also useful for grepping for program names -- instead of ps | grep program | grep -v grep, just ps | grep '[p]rogram' and grep won't match its own existence.

I tried this, enclosing the --md5 as you suggested.

This is the output
grep: '[-]-md5': No such file or directory
grep: xyy.: No such file or directory

Thanks
 

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LEARN ABOUT MINIX

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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