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Full Discussion: grep not working ????
Top Forums Shell Programming and Scripting grep not working ???? Post 302485069 by Franklin52 on Tuesday 4th of January 2011 07:06:40 AM
Old 01-04-2011
Quote:
Originally Posted by m.d.ludwig
Not to be a pita, but:
Code:
grep '^531250' inputfile

is not correct, for while it will match:
Code:
531250  1       21      42.1    100     1e-05   rubber_UT_velvet.seq.Contig4570

it will also match:
Code:
531250187423987423987324987432

which was not intended
The given solution is based on the given input file, I don't see any line like that.
 

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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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