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Full Discussion: Awk to replace a field
Top Forums Shell Programming and Scripting Awk to replace a field Post 302416239 by sugan on Sunday 25th of April 2010 10:28:28 PM
Old 04-25-2010
Awk to replace a field
Hi
I am using awk to replace the 4th feild of the input line. My code is below:

Code:
REP_LINE=$(echo $Line | awk -v var=$REPL_DT '{$4=var; print}')

It does replaces but all words/phrases after the 4th feild are erased. Is there a way to modify the 4th feild of the input line and to have all words/pharases that comes after the 4th feild.

For ex:
Code:
# ID          Owner       Last Reset Date
# JPN7386     Cindy       2010/03/17 (should be same as FIW-LR AP)

Here the script replace the Last reset date (4th feild) but all words following the 4th field, (should be same as FIW-LR AP) gets erased.

Thanks,
Sugan
 

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LEARN ABOUT FREEBSD

beastie.4th

BEASTIE.4TH(8)						    BSD System Manager's Manual 					    BEASTIE.4TH(8)

NAME

     beastie.4th -- FreeBSD ASCII art boot module

DESCRIPTION

     The file that goes by the name of beastie.4th is a set of commands designed to draw the ASCII art FreeBSD mascot -- known simply as beastie
     -- to the right of the boot loader menu.  The commands of beastie.4th by themselves are not enough for most uses.	Please refer to the exam-
     ples below for the most common situations, and to loader(8) for additional commands.

     Before using any of the commands provided in beastie.4th, it must be included through the command:

	   include beastie.4th

     This line is present in the default /boot/loader.rc file, so it is not needed (and should not be re-issued) in a normal setup.

     The commands provided by it are:

	   draw-beastie 	  Draws the FreeBSD logo.

				  The logo that is drawn is configured by setting the loader_logo variable in loader.conf(5) to one of
				  ``beastie'', ``beastiebw'', ``fbsdbw'', ``orb'', and ``orbbw'' (the default).

				  The position of the logo can be configured by setting the loader_logo_x and loader_logo_y variables in
				  loader.conf(5).  The default values are 46 (x) and 4 (y).

	   clear-beastie	  Clears the screen of beastie.

	   beastie-start	  Initializes the interactive boot loader menu.

				  The loader_delay variable can be configured in loader.conf(5) to the number of seconds you would like to delay
				  loading the boot menu.  During the delay the user can press Ctrl-C to fall back to autoboot or ENTER to proceed.
				  The default behavior is to not delay.

     The environment variables that effect its behavior are:

	   loader_logo
		     Selects the desired logo in the beastie boot menu. Possible values are: ``fbsdbw'', ``beastie'', ``beastiebw'', ``orb'',
		     ``orbbw'' (default), and ``none''.

	   loader_logo_x
		     Sets the desired column position of the logo. Default is 46.

	   loader_logo_y
		     Sets the desired row position of the logo. Default is 4.

	   beastie_disable
		     If set to ``YES'', the beastie boot menu will be skipped.	The beastie boot menu is always skipped if booting UEFI or running
		     non-x86 hardware.

	   loader_delay
		     If set to a number higher than zero, introduces a delay before starting the beastie boot menu. During the delay the user can
		     press either Ctrl-C to skip the menu or ENTER to proceed to the menu. The default is to not delay when loading the menu.

FILES

     /boot/loader      The loader(8).
     /boot/beastie.4th
		       beastie.4th itself.
     /boot/loader.rc   loader(8) bootstrapping script.

EXAMPLES

     Standard i386 /boot/loader.rc:

	   include /boot/beastie.4th
	   beastie-start

     Set a different logo in loader.conf(5):

	   loader_logo="beastie"

SEE ALSO

     loader.conf(5), loader(8), loader.4th(8)

HISTORY

     The beastie.4th set of commands first appeared in FreeBSD 5.1.

AUTHORS

     The beastie.4th set of commands was written by Scott Long <scottl@FreeBSD.org>, Aleksander Fafula <alex@fafula.com> and Devin Teske
     <dteske@FreeBSD.org>.

BSD
								  April 27, 2014							       BSD
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