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Top Forums Shell Programming and Scripting Breaking long lines into (characters, newline, space) groups Post 302316918 by cfajohnson on Sunday 17th of May 2009 10:07:49 AM
Old 05-17-2009
Quote:
Originally Posted by cfajohnson

The next exercise is to modify it so that the amount of indent can be specified.
Code:
if [ $# -eq 0 ]
then
  echo "USAGE: ${0##*/} FILE [width [ indent ]]"
  exit 1
fi

file=$1

awk -v width=${2:-79} -v indent=${3:-1} '
length > width {
    n = width
    while ( length($0) > n ) {
    printf "%s\n%" indent "s", substr($0,1, n), " "
    $0 = substr($0, n)
    n = width - indent
  }
}
{print}' "$file"


Last edited by cfajohnson; 05-17-2009 at 11:17 AM..
 

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MESSAGES(3)						  libbash messages Library Manual					       MESSAGES(3)

NAME
messages -- libbash library that implements a set of functions to print standard status messages SYNOPSIS
printOK [indent] printFAIL [indent] printNA [indent] printATTN [indent] printWAIT [indent] DESCRIPTION
General messages is a collection of functions to print standard status messages - those [ OK ] and [FAIL] messages you see during Linux boot process. The function list: printOK Prints a standard [ OK ] message (green) printFAIL Prints a standard [FAIL] message (red) printNA Prints a standard [ N/A] message (yellow) printATTN Prints a standard [ATTN] message (yellow) printWAIT Prints a standard [WAIT] message (yellow) Detailed interface description follows. indent Column to move to before printing. Default indent is calculated as TTY_WIDTH-10. If current tty width can not be determined (for example, in case of serial console), it defaults to 80, so default indent is 80-10=10 FUNCTIONS DESCRIPTIONS
printOK [indent] Prints a standard [ OK ] message (green) printFAIL [indent] Prints a standard [FAIL] message (red) printNA [indent] Prints a standard [ N/A] message (yellow) printATTN [indent] Prints a standard [ATTN] message (yellow) printWAIT [indent] Prints a standard [WAIT] message (yellow) EXAMPLES
Run a program named MyProg, and report it's success or failure: echo -n 'Running MyProg...' printWAIT if MyProg ; then printOK else printFAIL fi AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <gil@ran4.net> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
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