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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 302573774 by Corona688 on Tuesday 15th of November 2011 01:27:56 PM
Old 11-15-2011
Code:
# List files in the current directory
ls |
# 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
        done

These 2 Users Gave Thanks to Corona688 For This Post:
ganesh_248 Ion_Shell
 

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LEARN ABOUT DEBIAN

flow-split

flow-split(1)						      General Commands Manual						     flow-split(1)

NAME

       flow-split -- Split flow files into smaller files.

SYNOPSIS

       flow-split [-gGhn]  [-b big|little]  [-C comment]  [-d debug_level]  [-N nflows]  [-o outfile_basename]	[-T nseconds]  [-z z_level]

DESCRIPTION

       The flow-split utility will split a flow file into smaller files based on the the number of flows or the ammount of time that has passed.

OPTIONS

       -b big|little
		 Byte order of output.

       -C Comment
		 Add a comment.

       -d debug_level
		 Enable debugging.

       -g	 Split on source tag.

       -G	 Split on destination tag.

       -h	 Display help.

       -n	 Use symbols for tag field in filename.

       -N nflows Split after processing nflows.

       -o outfile_basename
		 The basename of the resulting files.

       -T nsecond
		 Split after processing an interval of nseconds flows.

       -z z_level
		 Configure compression level to  z_level.  0 is disabled (no compression), 9 is highest compression.

EXAMPLES

       Create 1 minute flow files from the flow archive in /flows/krc4.  Store the results in /flows/krc4.split

	 flow-cat /flows/krc4 | flow-split -T60 -o /flows/krc4.split/1min.

BUGS

       None known.

AUTHOR

       Mark Fullmer maf@splintered.net

SEE ALSO

       flow-tools(1)

																     flow-split(1)
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