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Full Discussion: Question about getopts
Top Forums Shell Programming and Scripting Question about getopts Post 302471619 by purdym on Sunday 14th of November 2010 09:32:32 AM
Old 11-14-2010
My preferred way to handle this is to first include a ':' as the first character in getopts...

Code:
while getopts ":dhqTv" OPT                              # While there is a command line option

This tells getopts not to print an error message when an unknown option is used.

Then, you have to provide your own message when an unknown option appears, use '?' in the case statement:

Code:
      ?)   print_status_message "ERROR: Unknown flag encountered.\n" ERROR
           print_options
           exit -1
           ;;

If you omit the first ':' the output is like:

Code:
root@ms:/home/unxsa/bin>./new_script_header.ksh93.getopts.unix -k

./new_script_header.ksh93.getopts.unix: -k: unknown option.

ERROR: Unknown flag encountered.

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