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Full Discussion: Gawk output difference
Top Forums Shell Programming and Scripting Gawk output difference Post 302785751 by radoulov on Tuesday 26th of March 2013 10:02:16 AM
Old 03-26-2013
Quote:
Originally Posted by Shivdatta
Thanks, that helps.

Was just wondering , if this thing is specific to GAWK 'coz nawk works fine on Solaris

Code:
$ cat test  | nawk '{FS="-"}  {print $2 " " $3 " " $1}' 
03 01 2013

Yes, different awk versions implement field splitting differently:

Code:
$ echo a:b | /usr/xpg4/bin/awk '{ FS = ":"; print NF }'
1
$ echo a:b | nawk '{ FS = ":"; print NF }'
2

That's why usually the correct way to assign a non-default field separator is in the BEGIN block or directly on the command line.

Code:
$ awk -F- '{ print $2, $3, $1 }' infile
01 01 2013
$ nawk -F- '{ print $2, $3, $1 }' infile
01 01 2013
$ /usr/xpg4/bin/awk -F- '{ print $2, $3, $1 }' infile
01 01 2013

 

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LEARN ABOUT POSIX

ucblinks

ucblinks(1B)					     SunOS/BSD Compatibility Package Commands					      ucblinks(1B)

NAME

       ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices

SYNOPSIS

       /usr/ucb/ucblinks [-e rulebase] [-r rootdir]

DESCRIPTION

       ucblinks  creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi-
       ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry.

       ucblinks does not remove unneeded compatibility links; these must be removed by hand.

       ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been  created,
       since the reconfiguration may have resulted in more compatibility names being needed.

       In  releases prior to SunOS 5.4, ucblinks used a  nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses  nawk
       for the default operation, although  nawk rule-bases can still be specifed with the -e option.  The  nawk rule-base equivalent to the SunOS
       5.4 default operation can be found in /usr/ucblib/ucblinks.awk.

OPTIONS

       -e rulebase     Specify rulebase as the file containing nawk(1) pattern-action statements.

       -r rootdir      Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /.

FILES

       /usr/ucblib/ucblinks.awk        sample rule-base for compatibility links

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5)

SunOS 5.10							    13 Apr 1994 						      ucblinks(1B)
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