Date: Sun, 06 Jun 2010 07:20:47 +0800 From: Aiza <aiza21@comclark.com> To: Robert Bonomi <bonomi@mail.r-bonomi.com>, "questions@freebsd.org" <questions@freebsd.org> Subject: Re: .sh & getopts Message-ID: <4C0ADBCF.8040506@comclark.com> In-Reply-To: <201006051513.o55FDCKj020952@mail.r-bonomi.com> References: <201006051513.o55FDCKj020952@mail.r-bonomi.com>
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Robert Bonomi wrote:
>> Date: Sat, 05 Jun 2010 20:51:28 +0800
>> From: Aiza <aiza21@comclark.com>
>> To: Robert Bonomi <bonomi@mail.r-bonomi.com>
>> Subject: Re: .sh & getopts
>>
>> Robert Bonomi wrote:
>>>
>>>> From owner-freebsd-questions@freebsd.org Thu Jun 3 23:36:28 2010
>>>> Date: Fri, 04 Jun 2010 12:35:56 +0800
>>>> From: Aiza <aiza21@comclark.com>
>>>> To: "questions@freebsd.org" <questions@freebsd.org>
>>>> Cc:
>>>> Subject: .sh & getopts
>>>>
>>>> Have this code
>>>>
>>>> shift; while getopts :ugr: arg; do case ${arg} in
>>>> u) action="freebsd-update";;
>>>> g) action="freebsd-upgrade";;
>>>> r) action="freebsd-rollback";;
>>>> ?) exerr ${cmd_usage};;
>>>> esac; done; shift $(( ${OPTION} -1 ))
>>>>
>>>>
>>>> Command being executed looks like this, cmd action -flags aaaa bbbb
>>>>
>>>> Only a single -flag in allowed on the command.
>>>>
>>>> $# gives a count of parms ie: aaaa bbbb. in this example a count of 2.
>>>>
>>>> I am looking for something to check that holds the number of flags on
>>>> the command. so I can code. if flag_count gt 1 = error
>>>>
>>>> Is there such a thing created by getopts?
>>> Why bother??
>>>
>>> flag_count=0
>>> shift; while getopts :ugr: arg
>>> if flag_count = 1; then
>>> exerr ${cmd_usage}
>>> fi
>>> flag_count=1;
>>> do case ${arg} in
>>> {{blah-blah}}
>>>
>> nope dont work.
>
> Yup. I was in a hurry, got the code mechanics wrong. it needs to be:
>
> flag_count=0
> shift;
> while getopts :ugr: arg ; do
> if flag_count = 1; then
> exerr ${cmd_usage}
> fi
> flag_count=1;
> case ${arg} in
> {{blah-blah}}
> ecas
> done
>
>
>
I think I see what your are saying. so to adapt it to my code
flag_count=0
shift; while getopts :ugr: arg; do
flag_count + 1;
case ${arg} in
u) action="freebsd-update";;
g) action="freebsd-upgrade";;
r) action="freebsd-rollback";;
?) exerr ${cmd_usage};;
esac; done; shift $(( ${OPTION} -1 ))
if flag_count gt 3; then
exerr ${cmd_usage}
fi
I think I got the concept correct, but the flag_count + 1 is not
correct. I get "flag_count: not found" when I run it this way.
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