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Full Discussion: Merging two files baased on condition
Top Forums UNIX for Dummies Questions & Answers Merging two files baased on condition Post 302752623 by Don Cragun on Monday 7th of January 2013 09:36:55 AM
Old 01-07-2013
Quote:
Originally Posted by satyar
Hi,
I managed to do this....
Code given below...

Code:
        BEGIN {FS = "*"}
        a[$1]= a[$1]"*" $2 "*" $3
        END{for(i in a)
                print i a[i] > "satya_new.txt"
           }

Please let me know....if u see any logical error in the code

Thanks
Assuming that you saved the above awk script in a file (say satya.awk for purposes of this discussion), and then ran the command:
Code:
awk -f satya.awk File1

then it might or might now work since setting FS to * produces undefined behavior.

I've marked a couple of changes. The first change is needed to get defined results. Your code in the second case is unconventional, but should work as expected either way (i.e., with or without the braces}:
Code:
        BEGIN {FS = "[*]"}
           {a[$1]= a[$1]"*" $2 "*" $3}
        END{for(i in a)
                print i a[i] > "satya_new.txt"
           }

This User Gave Thanks to Don Cragun For This Post:
satyar
 

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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

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

SEE ALSO

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

              info grub-render-label

       should give you access to the complete manual.

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