Single grep to multiple strings with separate output per string Post: 303003374

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Top Forums Shell Programming and Scripting Single grep to multiple strings with separate output per string Post 303003374 by RavinderSingh13 on Wednesday 13th of September 2017 09:22:52 AM

09-13-2017

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Quote:

Originally Posted by nms

I need to grep multiple strings from a particular file.
I found the use of egrep "String1|String2|String3" file.txt | wc-l
Now what I'm really after is that I need to separate word count per each string found. I am trying to keep it to use the grep only 1 time.
Can you guys help ?
---------- Post updated at 03:17 PM ---------- Previous update was at 03:15 PM ----------
To explain myself better is that I'm after something similar:

Code:

String1 2 
String2 1
String3 4.....

Hello nms,

Your complete requirement is not clear, so based on your explanation, could you please try following and let me know if this helps.

Code:

awk '/String1/{count1++;next} /String2/{count2++;next} /String3/{count3++;next} END{print "String1 ",count1 RS "String2 ",count2 RS "String3 ",count3}'  Input_file

Thanks,
R. Singh

Last edited by rbatte1; 09-13-2017 at 01:34 PM.. Reason: Retro-fitted the corrections made to the original post.

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lzegrep

XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME

       xzgrep - search compressed files for a regular expression

SYNOPSIS

       xzgrep [grep_options] [-e] pattern file...
       xzegrep ...
       xzfgrep ...
       lzgrep ...
       lzegrep ...
       lzfgrep ...

DESCRIPTION

       xzgrep  invokes	grep(1)  on  files  which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options
       specified are passed directly to grep(1).

       If no file is specified, then the standard input is decompressed if necessary and fed  to  grep(1).   When  reading  from  standard  input,
       gzip(1) and bzip2(1) compressed files are not supported.

       If  xzgrep  is  invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1).  The same applies to names lzgrep, lze-
       grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

ENVIRONMENT

       GREP   If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).

SEE ALSO

       grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)

Tukaani 							    2009-07-05								 XZGREP(1)