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Full Discussion: Count occurrence of string (based on type) in a column using awk
Top Forums UNIX for Dummies Questions & Answers Count occurrence of string (based on type) in a column using awk Post 302937127 by Don Cragun on Tuesday 3rd of March 2015 06:31:33 PM
Old 03-03-2015
Quote:
Originally Posted by RudiC
Try also
Code:
awk '$1==$2 {TYPE1++; next} {TYPE2++}  END {print "Type1 =", TYPE1, ", Type2 =", TYPE2}' FS="" file
Type1 = 6 , Type2 = 5

Although the above will work in some implementations of awk, the standards say that the behavior when FS is an empty string is unspecified. A more portable way of writing the above would be:
Code:
awk '{	type[substr($1, 1, 1) == substr($1, 2, 1)]++ }
END {	print "Type1 = " type[1] ", Type2 = " type[0] }' file

which, when file contains the table shown in pst #1 in this thread, produces the output:
Code:
Type1 = 6, Type2 = 5

If you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk.
 

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LEARN ABOUT MOJAVE

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
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