Hi everyone,

I am trying to create a scritp which will run with either one argument
or with no arguments, like this

$ .myscript -m

or

$ .myscript

My script should run in one way if I give -m option and in other way
if I dont give any options at all. Is it possible with getopts?

Thanks,
RB

On 31 Jul., 17:00, rach...@gmail.com wrote:
> Hi everyone,
>
> I am trying to create a scritp which will run with either one argument
> or with no arguments, like this
>
> $ .myscript -m
>
> or
>
> $ .myscript
>
> My script should run in one way if I give -m option and in other way
> if I dont give any options at all. Is it possible with getopts?

Sure it is. Haven't you read the man page?

while getopts m opt
do
case $opt in
m) handle_m;;
*) handle_default;;
esac
done
shift $(($OPTIND-1))
: handle rest of args in "$@"

(I hope I made no typos. And have a look into the docs how to handle
wrong input.)

Janis

>
> Thanks,
> RB

On 31 Jul., 17:00, rach...@gmail.com wrote:
> Hi everyone,
>
> I am trying to create a scritp which will run with either one argument
> or with no arguments, like this
>
> $ .myscript -m
>
> or
>
> $ .myscript
>
> My script should run in one way if I give -m option and in other way
> if I dont give any options at all. Is it possible with getopts?

Sure it is. Haven't you read the man page?

while getopts m opt
do
case $opt in
m) handle_m;;
*) handle_default;;
esac
done
shift $(($OPTIND-1))
: handle rest of args in "$@"

(I hope I made no typos. And have a look into the docs how to handle
wrong input.)

Janis

>
> Thanks,
> RB

On Jul 31, 11:00 am, rach...@gmail.com wrote:
> Hi everyone,
>
> I am trying to create a scritp which will run with either one argument
> or with no arguments, like this
>
> $ .myscript -m
>
> or
>
> $ .myscript
>
> My script should run in one way if I give -m option and in other way
> if I dont give any options at all. Is it possible with getopts?
>
> Thanks,
> RB

Nevermind I figured it out, here it is

$ cat testgetopts
#!/bin/ksh
#Test getopts with one/more or no argument

if getopts :m options
then
case $options in
m) echo " You entered -m as an option";;
\?) echo "Not a legal option";;
esac
else
echo "You can run this without -m option"
fi

On Jul 31, 11:00 am, rach...@gmail.com wrote:
> Hi everyone,
>
> I am trying to create a scritp which will run with either one argument
> or with no arguments, like this
>
> $ .myscript -m
>
> or
>
> $ .myscript
>
> My script should run in one way if I give -m option and in other way
> if I dont give any options at all. Is it possible with getopts?
>
> Thanks,
> RB

Nevermind I figured it out, here it is

$ cat testgetopts
#!/bin/ksh
#Test getopts with one/more or no argument

if getopts :m options
then
case $options in
m) echo " You entered -m as an option";;
\?) echo "Not a legal option";;
esac
else
echo "You can run this without -m option"
fi

On Jul 31, 11:27 am, rach...@gmail.com wrote:
> On Jul 31, 11:00 am, rach...@gmail.com wrote:
>
>
>
>
>
> > Hi everyone,
>
> > I am trying to create a scritp which will run with either one argument
> > or with no arguments, like this
>
> > $ .myscript -m
>
> > or
>
> > $ .myscript
>
> > My script should run in one way if I give -m option and in other way
> > if I dont give any options at all. Is it possible with getopts?
>
> > Thanks,
> > RB
>
> Nevermind I figured it out, here it is
>
> $ cat testgetopts
> #!/bin/ksh
> #Test getopts with one/more or no argument
>
> if getopts :m options
> then
> case $options in
> m) echo " You entered -m as an option";;
> \?) echo "Not a legal option";;
> esac
> else
> echo "You can run this without -m option"
> fi- Hide quoted text -
>
> - Show quoted text -

Thanks Janis,

That was really quick response.

Regards,
RB

On Jul 31, 11:27 am, rach...@gmail.com wrote:
> On Jul 31, 11:00 am, rach...@gmail.com wrote:
>
>
>
>
>
> > Hi everyone,
>
> > I am trying to create a scritp which will run with either one argument
> > or with no arguments, like this
>
> > $ .myscript -m
>
> > or
>
> > $ .myscript
>
> > My script should run in one way if I give -m option and in other way
> > if I dont give any options at all. Is it possible with getopts?
>
> > Thanks,
> > RB
>
> Nevermind I figured it out, here it is
>
> $ cat testgetopts
> #!/bin/ksh
> #Test getopts with one/more or no argument
>
> if getopts :m options
> then
> case $options in
> m) echo " You entered -m as an option";;
> \?) echo "Not a legal option";;
> esac
> else
> echo "You can run this without -m option"
> fi- Hide quoted text -
>
> - Show quoted text -

Thanks Janis,

That was really quick response.

Regards,
RB

rachit7@gmail.com wrote:
> On Jul 31, 11:27 am, rach...@gmail.com wrote:
>
>>On Jul 31, 11:00 am, rach...@gmail.com wrote:
>>
>>
>>
>>
>>
>>
>>>Hi everyone,
>>
>>>I am trying to create a scritp which will run with either one argument
>>>or with no arguments, like this
>>
>>>$ .myscript -m
>>
>>>or
>>
>>>$ .myscript
>>
>>>My script should run in one way if I give -m option and in other way
>>>if I dont give any options at all. Is it possible with getopts?
>>
>>>Thanks,
>>>RB
>>
>>Nevermind I figured it out, here it is
>>
>>$ cat testgetopts
>>#!/bin/ksh
>>#Test getopts with one/more or no argument
>>
>>if getopts :m options
>>then
>> case $options in
>> m) echo " You entered -m as an option";;
>> \?) echo "Not a legal option";;
>> esac
>>else
>>echo "You can run this without -m option"
>>fi- Hide quoted text -
>>
>>- Show quoted text -
>
>
> Thanks Janis,
>
> That was really quick response.

You're welcome.

If you want your script extensible just change the if construct to a
while loop and add the 'shift' to be able to process the rest of the
arguments. Then you can use that same pattern for all your scripts.

Janis

>
> Regards,
> RB
>