Script to count word occurrences, but exclude some? Post: 302657019

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Top Forums Shell Programming and Scripting Script to count word occurrences, but exclude some? Post 302657019 by agama on Friday 15th of June 2012 10:16:38 PM

06-15-2012

Registered User

Given your requirements for black listing and finding capitalised leading letters, I'd probably have approached it this way:

Code:

awk '
    NR == FNR { $1; blist[$1]; next; }      # read black list

    {
        for( i=1; i <= NF; i++ )
        {
            ignore = ignore_nxt;
            ignore_nxt = 0;
            ignore_nxt = ( match(  $i, "[?.!]" ) && RSTART == length( $i ) );

            gsub( "[:,%?<>&@!=+.()]", "", $(i) );       # trash punctuation not considered part of a word
            if( length( $(i) ) > 3 )
            {
                count[$(i)]++;
                fc = substr( $(i), 1, 1 );
                if( !ignore && fc >= "A" && fc <= "Z" )
                    cap++;
            }
        }
    }
    END {
        printf( "words starting with a capital: %d\n", cap ) >"/dev/fd/2";  # out to stderr so it doesnt sort
        for( x in count )
        {
            if( !( x in blist ) )
                print x, count[x];
        }
    }
' blacklist.file text-file | sort -k 2nr,2

The captialisation is tricky. You can count all words with capitalised letters, or ignore those that immediatly follow a full stop (.), question (?) or explaination (!). The code above does the latter -- effectively counting proper names that appear in the middle of the sentence. You can comment out the statements that check for and set the ignore variables, and it will count all words that start with a capitalised letter and are larger than 3 characters in length.

Might not be exactly what you want, but it should give you an idea of one method.

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colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD