Re: [bash-tips] Digest for bash-tips@googlegroups.com - 1 update in 1 topic

[Don Mitchell]

#!/bin/bash

if [ $# -ne 1 ]

then

    echo Usage: $(basename $0) input_file

    exit 1

fi

if [ ! -r "${1}" ]

then

    echo File ${1} is not readable or does not exist

    exit 2

fi

# redirect file contents into file descriptor 3

exec 3< "$1"

# keep reading lines from file descriptor 3 until no more

while read -u 3 line1

do

    # each set of data covers 4 lines, we already read the first line

    # so read the next three lines

    read -u 3 line2 || MISSING_LINE=1

    read -u 3 line3 || MISSING_LINE=1

    read -u 3 line4 || MISSING_LINE=1

    if [ "${MISSING_LINE}" = "1" ]

    then

        # partial set of data, we expect four rows

        # for each set of data, with the fourth row

        # being blank or just whitespace

        exit 0

    fi

    # parse line2 using whitespace, into field 1, field 2, etc

    set -- $line2

    l2_token1=${1}

    l2_token2=${2}

    l2_token3=${3}

    # parse line3 using whitespace, into field 1, field 2, etc

    set -- $line3

    l3_token1=${1}

    l3_token2=${2}

    l3_token3=${3}

    echo $line1

    echo $l2_token1

    echo $l3_token1

    echo $l2_token2

    echo $l3_token2

    echo $l2_token3

    echo $l3_token3

    echo

done

On Wed, Jan 27, 2016 at 3:16 AM, <bash...@googlegroups.com> wrote:

bash...@googlegroups.com

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• format columns bash - 1 Update

format columns bash

mytubeclips <lanc...@gmail.com>: Jan 26 02:16PM -0800 Greetings i have a file which contains the following   Something 01 average max min 123 215 0   Something 02 average max min 1 10 5   etc...   im hoping to change the output to look like:   Something 01 average 123 max 215 min 0   Something 02 average 1 max 10 min 5   help please Thank again.

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