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Full Discussion: to grep and print their counts
Top Forums Shell Programming and Scripting to grep and print their counts Post 302140524 by drl on Saturday 13th of October 2007 01:16:11 PM
Old 10-13-2007
Hi.

Using standard utilities:
Code:
#!/usr/bin/env sh

# @(#) s1       Demonstrate split of line into characters, filter, sort, count.

set -o nounset
echo

debug=":"
debug="echo"

## Use local command version for the commands in this demonstration.

echo "(Versions used in this script displayed with local utility "version")"
version bash sed grep sort uniq

echo

FILE=${1-data1}

sed -e 's/\(.\)/\1\n/g' $FILE |
grep -f data2 |
sort |
uniq -c

exit 0

To produce:
Code:
% ./s1

(Versions used in this script displayed with local utility version)
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
GNU sed version 4.1.2
grep (GNU grep) 2.5.1
sort (coreutils) 5.2.1
uniq (coreutils) 5.2.1

      9 A
      7 C
      4 F
      2 R

Noting that "F" is indeed 4: using a local utility:
Code:
% describe -c data1
    1 lines read
    1 words read
   40 chars read

   39 length of longest line
    1 occurrences
    1 line at which first seen
    1 line at which last seen

   39 length of shortest (non-zero length) line
    1 occurrences
    1 line at which first seen
    1 line at which last seen

  1:1 columns:lines.
       1 newline
       9 A
       1 B
       7 C
       4 F
       1 G
       2 H
       4 J
       2 R
       2 S
       2 T
       5 V

Best wishes ... cheers, drl
 

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LEARN ABOUT DEBIAN

uniq

UNIQ(1) 							   User Commands							   UNIQ(1)

NAME

       uniq - report or omit repeated lines

SYNOPSIS

       uniq [OPTION]... [INPUT [OUTPUT]]

DESCRIPTION

       Filter adjacent matching lines from INPUT (or standard input), writing to OUTPUT (or standard output).

       With no options, matching lines are merged to the first occurrence.

       Mandatory arguments to long options are mandatory for short options too.

       -c, --count
	      prefix lines by the number of occurrences

       -d, --repeated
	      only print duplicate lines

       -D, --all-repeated[=delimit-method]
	      print all duplicate lines delimit-method={none(default),prepend,separate} Delimiting is done with blank lines

       -f, --skip-fields=N
	      avoid comparing the first N fields

       -i, --ignore-case
	      ignore differences in case when comparing

       -s, --skip-chars=N
	      avoid comparing the first N characters

       -u, --unique
	      only print unique lines

       -z, --zero-terminated
	      end lines with 0 byte, not newline

       -w, --check-chars=N
	      compare no more than N characters in lines

       --help display this help and exit

       --version
	      output version information and exit

       A field is a run of blanks (usually spaces and/or TABs), then non-blank characters.  Fields are skipped before chars.

       Note:  'uniq'  does  not  detect  repeated  lines unless they are adjacent.  You may want to sort the input first, or use `sort -u' without
       `uniq'.	Also, comparisons honor the rules specified by `LC_COLLATE'.

AUTHOR

       Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS

       Report uniq bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report uniq translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       comm(1), join(1)

       The full documentation for uniq is maintained as a Texinfo manual.  If the info and uniq programs are properly installed at your site,  the
       command

	      info coreutils 'uniq invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							   UNIQ(1)
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