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Full Discussion: GREP for sorting
Top Forums UNIX for Dummies Questions & Answers GREP for sorting Post 302753971 by siya@ on Wednesday 9th of January 2013 08:41:32 PM
Old 01-09-2013
GREP for sorting
Hi ,

I have a file which has a large number of sequences of type:

Code:
gi_1
AASSKSKSKSSKSKSK....
series_121
DDKFKFKGKGKH
gi_3
FFFFLFFLFLFLF
series_1
DFFFFFF
pattern_3
GEEEEEEEEE
gi_2
HKKGGKGKGK
series_102
HHHHH
pattern_1
HHHHH

In order to list all the sequences under gi I do
grep "gi" filename>outputfile
it gives me list of all gi .

However I want to list all of the sequences as shown below.I want to basically know the order like gi_1 followed by series_1 and by gi_3

Code:
gi_1
series_121
gi_3
series_1
pattern_3
gi_2
series_102
pattern_1


Is it possible to get all this in a single file and that too in the order they appear in file?

Should i do a multiple grep command to get all these names in a single file to get the order.


Thanks
Sia
Last edited by Scott; 01-10-2013 at 10:58 AM.. Reason: Please use code tags
 

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LEARN ABOUT PHP

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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