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Full Discussion: Searching a String
Top Forums Shell Programming and Scripting Searching a String Post 302558827 by grepeverything on Sunday 25th of September 2011 03:10:10 PM
Old 09-25-2011
hi,
I know you've already got a solution but just to say there is another way which gives you pretty much the same output you wanted:
Code:
grep -o '^\<[[:alnum:]]*\>' yourtextfile  | sort | uniq -c | sort -nr

* grep -o '^\<[[:alnum:]]*\>' finds the first alphanumeric word (using \< and \>, see the grep manpage for an explanation) on the line. If you remove the "^" it will give you word frequency for every word in the file.
* the option -o means only print the matched pattern, which is often extremely useful
So you've already now extracted all the first words from your file, you just have to count the frequency of them, which you can do with uniq -c after they're ordered so duplicates are adjacent. The final sort -r (reverse order) puts them in the ordered you wanted.
 

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LEARN ABOUT ULTRIX

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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