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Full Discussion: awk remove/grab lines from file with pattern from other file
Top Forums Shell Programming and Scripting awk remove/grab lines from file with pattern from other file Post 302966265 by RavinderSingh13 on Wednesday 10th of February 2016 08:36:12 AM
Old 02-10-2016
Quote:
Originally Posted by SDohmen
I know i can redirect the output but it still did not remove the lines from the main file. Sorry if that was unclear before.

Omg you are fast with editing Smilie. I tested the revised code and it seems to work fine. I now have 2 files with different output in each. I will test it some more with other files to be sure but it seems to work. Thank you again for the extremly fast helping.
Hello SDohmen,

Here is exactly what you may be looking for.
Code:
cat script.ksh
awk 'FNR==NR{A[$1]=$1;next} ($1 in A){print >> "Output_match_found_file"} !($1 in A){print >> "Output_match_NOT_found_file"}' pattern_file FS=";" main_file
if [[ $? == 0 ]]
then
        mv  main_file main_file_Original
        mv  Output_match_NOT_found_file main_file
else
        echo "Please check there seems to be an issue with awk command."
fi

Above code will create a backup for main_file with name main_file_Original and remvove non-matching lines from main_file too, let me know if this helps you.
EDIT: Also you could try following too. Here if first awk statement fails then off course 2nd statement to change Input_file name will not be executed then.
Code:
 awk 'FNR==NR{A[$1]=$1;next} ($1 in A){print >> "Output_match_found_file"} !($1 in A){print >> "Output_match_NOT_found_file"}' pattern_file FS=";" match_file && mv Output_match_NOT_found_file match_file

Thanks,
R. Singh
Last edited by RavinderSingh13; 02-10-2016 at 09:55 AM.. Reason: Added one more solution on same now.
 

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LEARN ABOUT DEBIAN

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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