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Full Discussion: How to detect awk and nawk?
Top Forums Shell Programming and Scripting How to detect awk and nawk? Post 302989456 by bakunin on Thursday 12th of January 2017 04:54:52 PM
Old 01-12-2017
Quote:
Originally Posted by mohtashims
Can you propose a solution that without having to tweak my 10 scripts at several places everytime i deploy them to a new set of servers the awk-nawk problem should be automatically addressed.
Yes: use a variable (which holds the path to the respective awk). I suppose which one to use depends on the OS used at the respective server, so something along these lines:

Code:
typeset AWK="/this/is/the/fallback/awk"         # default location

# determine value for "$OS" here

case $OS in
     A)
          AWK="/usr/bin/awk"
          ;;

     B)
          AWK="/path/to/nawk"
          ;;

     Solaris)
          AWK="/usr/xpg4/bin/awk"
          ;;

     [...]
esac

[...]

$AWK 'here goes script1 ...' /path/to/file

[...]

$AWK 'script2 ...' /path/to/other.file

[...]

I hope this helps.

bakunin
 

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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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