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Homework and Emergencies Emergency UNIX and Linux Support Combine multiple Files into one big file Post 302573776 by Corona688 on Tuesday 15th of November 2011 01:35:40 PM
Old 11-15-2011
Okay.

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
        done

This User Gave Thanks to Corona688 For This Post:
 

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COMM(1) 							   User Commands							   COMM(1)

NAME
comm - compare two sorted files line by line SYNOPSIS
comm [OPTION]... FILE1 FILE2 DESCRIPTION
Compare sorted files FILE1 and FILE2 line by line. When FILE1 or FILE2 (not both) is -, read standard input. With no options, produce three-column output. Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and column three contains lines common to both files. -1 suppress column 1 (lines unique to FILE1) -2 suppress column 2 (lines unique to FILE2) -3 suppress column 3 (lines that appear in both files) --check-order check that the input is correctly sorted, even if all input lines are pairable --nocheck-order do not check that the input is correctly sorted --output-delimiter=STR separate columns with STR --total output a summary -z, --zero-terminated line delimiter is NUL, not newline --help display this help and exit --version output version information and exit Note, comparisons honor the rules specified by 'LC_COLLATE'. EXAMPLES
comm -12 file1 file2 Print only lines present in both file1 and file2. comm -3 file1 file2 Print lines in file1 not in file2, and vice versa. AUTHOR
Written by Richard M. Stallman and David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report comm translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
join(1), uniq(1) Full documentation at: <http://www.gnu.org/software/coreutils/comm> or available locally via: info '(coreutils) comm invocation' GNU coreutils 8.28 January 2018 COMM(1)
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