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Full Discussion: Pairing up numbers
Top Forums Shell Programming and Scripting Pairing up numbers Post 302687323 by Corona688 on Thursday 16th of August 2012 11:01:39 AM
Old 08-16-2012
Code:
#!/bin/bash

while IFS="|" read CLIENT NAME USERNAME CONN INST PART
do
        [ "${CLIENT:0:1}" = "#" ] && continue
        [ "$PART" = "Y" ] || continue

        set -- $INST # If INST="01 02 03 04", $1=01, $2=02, $3=03, $4=04
        MIN=$(($# / 2))
        while [ "$#" -gt 0 ]
        do
                echo "logfile$1.txt" "logfile$2.txt" # Pair the first two
                shift 2 # Get rid of the first two, so $1=$3, $2=$4, ...
        done
done < inputfile

Code:
$ ./cfgfile.sh

logfile01.txt logfile02.txt
logfile03.txt logfile04.txt
logfile01.txt logfile02.txt
logfile03.txt logfile04.txt
logfile05.txt logfile06.txt
logfile07.txt logfile08.txt

$

 

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CUT(1)							      General Commands Manual							    CUT(1)

NAME
cut - select out columns of a file SYNOPSIS
cut [ -b | -c] list [file...] cut -f list [-d delim] [ -s] OPTIONS
-b Cut specified bytes -c Select out specific characters -d Change the column delimiter to delim -f Select out specific fields that are separated by the -i Runs of delimiters count as one -s Suppres lines with no delimiter characters, when used EXAMPLES
cut -f 2 file # Extract field 2 cut -c 1-2,5 file # Extract character columns 1, 2, and 5 cut -c 1-5,7- file # Extract all columns except 6 DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched" Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa- rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man- ual page. SEE ALSO
sed(1), awk(9). CUT(1)
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