How to assign a value to a variable in awk scripting? Post: 303038187

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Top Forums UNIX for Beginners Questions & Answers How to assign a value to a variable in awk scripting? Post 303038187 by bhagya123 on Tuesday 27th of August 2019 02:33:30 PM

08-27-2019

Registered User

Thanks..Actually i tried with substr and it was working..

Later i encountered an error and thought that is related to to the substr function. But looks like it caused by something else.

Thanks for the response !!

--- Post updated at 07:33 PM ---

Similar to that I am also trying an awk array and wanted to check if the array value match string "{5:{" , replace with 5: and assign it back to same array and print it.

But below code is not working its not able to replace the array value , instead its assigning whole command to msg_arr[i] and printing it

any solution for this?

Code:

              for (i=msgtkn_20_lnno; i<msg_lnno;)
              {
                if(msg_arr[i]  ~ /^{5:{/ )
                {
                tag5_before_value= msg_arr[i];
               msg_arr[i]="echo $tag5_before_value | sed 's/{5:{/5:/g'";
                printf "after conversion is %s/n", abc > "LOG.txt";
               print msg_arr[i++];
               }
                else
                {
                  print msg_arr[i++];
                }

              }

as soon as i use "`" its giving me syntax error

Last edited by Don Cragun; 08-27-2019 at 09:49 PM.. Reason: Add CODE tags, again.

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head

HEAD(1) 								FSF								   HEAD(1)

NAME

       head - output the first part of files

SYNOPSIS

       head [OPTION]... [FILE]...

DESCRIPTION

       Print  first  10 lines of each FILE to standard output.	With more than one FILE, precede each with a header giving the file name.  With no
       FILE, or when FILE is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -c, --bytes=SIZE
	      print first SIZE bytes

       -n, --lines=NUMBER
	      print first NUMBER lines instead of first 10

       -q, --quiet, --silent
	      never print headers giving file names

       -v, --verbose
	      always print headers giving file names

       --help display this help and exit

       --version
	      output version information and exit

       SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.

AUTHOR

       Written by David MacKenzie.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The  full documentation for head is maintained as a Texinfo manual.  If the info and head programs are properly installed at your site, the
       command

	      info head

       should give you access to the complete manual.

head (coreutils) 4.5.3						   February 2003							   HEAD(1)

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