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Full Discussion: Reduce the number of lines by using Array
Top Forums Shell Programming and Scripting Reduce the number of lines by using Array Post 302931210 by ongoto on Monday 12th of January 2015 01:04:59 AM
Old 01-12-2015
Quote:
Originally Posted by samsan
Hi ongoto
It does not likethese two lines:-

idx=$(( $iname - 1 )) # array index count from zero AGES[$nam]=$age # update AGES array
I am getting the following error :-
bad array subscript
You have to be careful not to enter a number that is out of range. (zero or greater than the size of the list)

I made a few changes to catch that error and another bug I discovered...
Code:
function name {
echo
echo "Which name you want to change? "
read iname
[ $iname ] || output;    # No entry = exit
if [ $iname -gt $SIZE ] || [ $iname -lt 1 ]; then
    echo "Choice is out of range"
    listname;
fi

Code:
function listname {
num=0
for x in ${NAMES[*]};
do
    num=$(( $num + 1 ))
    printf "%d-%s" $num $x
    if [[ $(( $num % 4 )) -ne 0 ]]; then    # 4 column display
        printf "\t"
    else
        printf "\n"
    fi  
    SIZE=$num
done

Code:
NAMES=($(cat names.data | sort -u))     # unique names array
SIZE=0

function output {
echo
for x in ${NAMES[*]};
do
    echo "$x(${AGES[$x]})"
done
exit
}

Last edited by ongoto; 01-12-2015 at 03:25 AM.. Reason: noted changes
This User Gave Thanks to ongoto For This Post:
samsan
 

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grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)
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