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Top Forums Shell Programming and Scripting Creating Frequency of words from a file by accessing a corpus Post 302836281 by durden_tyler on Wednesday 24th of July 2013 01:07:26 AM
Old 07-24-2013
Looks like "grep" returns a different count for "eng" than UltraEdit. But the counts determined by grep and Perl are consistent.

Code:
$ 
$ cat words.txt
eng
book
shop
writ
$ 
$ 
$ grep eng en.txt | wc -l
1123
$ 
$ grep book en.txt | wc -l
220
$ 
$ grep shop en.txt | wc -l
147
$ 
$ grep writ en.txt | wc -l
176
$ 
$ # The Perl program
$ cat -n word_frequency.pl
     1    #!/usr/bin/perl -w
     2    use strict;
     3    my $wordfile = $ARGV[0];
     4    my $testfile = $ARGV[1];
     5    my %occurrences;
     6    open(WF, "<", $wordfile) or die "Can't open $wordfile: $!";
     7    while (<WF>) {
     8      chomp;
     9      $occurrences{$_} = 0
    10    }
    11    close(WF) or die "Can't close $wordfile: $!";
    12    open(TF, "<", $testfile) or die "Can't open $testfile: $!";
    13    while (<TF>) {
    14      chomp(my $word = $_);
    15      foreach my $k (keys %occurrences) {
    16        $occurrences{$k}++ if $word =~ /$k/
    17      }
    18    }
    19    close(TF) or die "Can't close $testfile: $!";
    20    while (my ($k, $v) = each %occurrences) {
    21      printf("%-10s occurs %5d times\n", $k, $v);
    22    }
$ 
$ # "en.txt" is the file you attached in your post
$ perl word_frequency.pl words.txt en.txt
shop       occurs   147 times
book       occurs   220 times
writ       occurs   176 times
eng        occurs  1123 times
$ 
$

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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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