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Full Discussion: Combine multiple Files into one big file
Homework and Emergencies Emergency UNIX and Linux Support Combine multiple Files into one big file Post 302573785 by Corona688 on Tuesday 15th of November 2011 02:08:35 PM
Old 11-15-2011
Code:
# List relevant files in the current directory
ls Daily_report_[0-9][0-9][0-9][0-9]_[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]_[0-9] |
# Feed it into the AWK programming language.
# splits each line apart $1,$2,...$NF on the _ character.
# Then puts it back together into STR, minus the _1,_2, etc on the end.
# Then stores it in T.
# Once it's read all lines, prints all unique combinations it found.
        awk -F_ '{ STR=$1; for(N=2; N<NF; N++) STR=STR"_"$N;  T[STR]=1 } END { for(K in T) print K; }' |
# Reads unique combinations from awk, like Daily_report_2222_20111115
# and puts them in the variable LINE.
# feed all files matching ${LINE}_* into cat, writing to the file $LINE.
        while read LINE
        do
                cat ${LINE}_* > $LINE
                rm -f ${LINE}_*
        done

This User Gave Thanks to Corona688 For This Post:
ganesh_248
 

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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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