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Full Discussion: AWK help please - beginner
Top Forums UNIX for Dummies Questions & Answers AWK help please - beginner Post 302120941 by aigles on Sunday 10th of June 2007 03:52:31 PM
Old 06-10-2007
Quote:
Here's another one.

Abe M 70
Bea F 65
Cathy F 67
Dave M 69

Code:
{
if ($N / [fF] /) {
fsum = fsum + 3
fnum = fsum + 1
}
if ($2N/[mM]){
msum = msum + $3
mnum = mnum + 1
}
}

What does "if ($N / [fF] /)" or "($2N/[mM])" mean?
Your awk program isn't valid.
The is a problem with the syntax of the two if staments.
If you try to execute it, you will get the following errors (with GNU awk):
Code:
$ awk -f coll.awk inputfile
awk: coll.awk:3:    if ($N / [fF] /) {
awk: coll.awk:3:             ^ syntax error
awk: coll.awk:3:    if ($N / [fF] /) {
awk: coll.awk:3:                   ^ unterminated regexp
awk: coll.awk:7:    if ($2N/[mM]){
awk: coll.awk:7:    ^ syntax error
awk: coll.awk:7:    if ($2N/[mM]){
awk: coll.awk:7:            ^ syntax error
awk: coll.awk:7:    if ($2N/[mM]){
awk: coll.awk:7:                 ^ syntax error
awk: coll.awk:9:       msum = msum + $3
awk: coll.awk:9:                       ^ unexpected newline or end of string
awk: coll.awk:10:       mnum = mnum + 1
awk: coll.awk:10:                      ^ unexpected newline or end of string
$

Jean-Pierre.
 

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LEARN ABOUT REDHAT

tzselect

TZSELECT(8)						      System Manager's Manual						       TZSELECT(8)

NAME

       tzselect - select a time zone

SYNOPSIS

       tzselect

DESCRIPTION

       The  tzselect program asks the user for information about the current location, and outputs the resulting time zone description to standard
       output.	The output is suitable as a value for the TZ environment variable.

       All interaction with the user is done via standard input and standard error.

ENVIRONMENT VARIABLES

       AWK    Name of a Posix-compliant awk program (default: awk).

       TZDIR  Name of the directory containing time zone data files (default: /usr/local/etc/zoneinfo).

FILES

       TZDIR/iso3166.tab
	      Table of ISO 3166 2-letter country codes and country names.

       TZDIR/zone.tab
	      Table of country codes, latitude and longitude, TZ values, and descriptive comments.

       TZDIR/TZ
	      Time zone data file for time zone TZ.

EXIT STATUS

       The exit status is zero if a time zone was successfully obtained from the user, nonzero otherwise.

SEE ALSO

       newctime(3), tzfile(5), zdump(8), zic(8)

																       TZSELECT(8)
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