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getopts exclusive arguments

Comment:

hi all i got a ksh script where i want to do the following : there are 3 possible arugments : a, b ,c and only one of them can be called. #foo -a is ok #foo -b -c is not ok so i wrote the getopts part : while getopts abc options do case $option in a)... b)... c)... esac what is a "clean way of checking that only one option (a or b or c) is used? tnx

Name: lankrypt0
Date: June 25, 2007 at 09:02:09 Pacific

Reply:

I would actually do a simple if if [[ $2 != "" ]];then FAIL else while getopts abc options do case $option in a)... b)... c)... esac fi That will check for any input for the second argument.

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