passing integer in getopts Post: 302419916

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Top Forums Shell Programming and Scripting passing integer in getopts Post 302419916 by frans on Monday 10th of May 2010 05:12:13 AM

05-10-2010

Registered User

Quote:

Originally Posted by arun_maffy

Actually I wanted to incorporate more options to this script, so I'm trying to use the getopts. My requirement is apart from the numeral values I want to check for other options.

That's what i understood.
Therefore, the shift $(($OPTIND - 1)) command sets the first parameter after the options as $1, no matter the number of options.
You must call the script with the usual syntax like

Code:

scriptname -h -x -y 89
# or
scriptname -hxy 89
# where x and y are the other options. Note that you can put arguments to the options. 
scriptname -t 300 # where 300 is the value for the t option.
# Must be written in the script like (suppose you have h, t, x and y)
while getopts ":ht:xy" Option
# Note the ':' after 't' : Option requires an argument
do
    case $Option in
        h     ) display_help;;
        t) T=$OPTARG ;; # puts the argument in variable T
        x) process x ;;
        y) process y ;;
    esac
done
shift $(($OPTIND - 1))

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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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