parameter question

[hokky]

Hi guys,

I just wanna have flexible parameter for my script and I couldn't find out how to put validation on it.

The script has one or more parameter, but the sequence could be changed

example :
./script.ksh -U user (accepted)
./script.ksh -U user -P password (accepted)
./script.ksh -P password -U user (accepted)

Anyone got any idea ?

Thx heaps guys

 

[hokky]

Probably I need to put more information,

If I want to input username, I have to give -U first.
Same if I wanna input password, I have to give -P first.

But there is input which is super user that doesn't need any password.

How to make this parameter feasible ?

Thanks guys

 

[Annihilannic]

Have a look into getopts. What shell are you using?

Annihilannic.

 

[hokky]

ksh anni,

Any idea how ??
Thanks dude

 

[gregor weertman]

#!/usr/bin/sh

set -- `getopt PU: $*`

#getopt UP: $*

while [ $# -gt 0 ]; do
case $1 in
-U)
shift 1
USER=$1
;;
-P)
shift 1
PASSWD=$2
;;
--)
shift
break
;;
esac
shift
done

echo USER $USER
echo PASSWD $PASSWD

 

[PHV]

In ksh don't use the deprecated getopt but getopts:
man getopts

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[hokky]

Thanks guys,

After work around I found this script :

#!/usr/bin/ksh

#USER=
#PASSWD=

while getopts P:U: OPTION 2>/dev/null
do
        case ${OPTION} in
                U)
                        USER=${OPTARG}
                        ;;
                P)
                        PASSWD=${OPTARG}
                        ;;
                *) echo "please put proper input"
                        exit 2;;
        esac
done

echo USER $USER
echo PASSWD $PASSWD

The interesting part is

please see this input and result

[root@dhcppc0 Script]# ./coba.ksh -U user -P password
USER user
PASSWD password
[root@dhcppc0 Script]# ./coba.ksh -P user -U password
USER password
PASSWD user
[root@dhcppc0 Script]# ./coba.ksh -U user
USER user
PASSWD
[root@dhcppc0 Script]# ./coba.ksh -P password
USER [b]test[/b]
PASSWD password

see the last test, where the "test" coming from ??? probably from previous input, but how come it doesn't get cleared ?

Any explanation guys ?

That's why I have to put
USER=
PASSWD=

as declaration

 

[hokky]

I forgot one thing, what "shift" command for ??

I read the man shift, but I don't quite understand.

Thanks guys

 

[p5wizard]

You are probably logged in as user "test", it is a predefined variable in Korn shell.

Try use another variable name cobauser or so.

The shift loses the first parameter given and shifts the other variables to the left.

testscript a b c d

at invocation:
$1=a
$2=b
$3=c
$4=d
$#=4

after 'shift':
$1=b
$2=c
$3=d
$4 is not set anymore (null string)
$#=3

after another 'shift 2':
$1=d
$#=1
$2 to $4 are not set anymore



HTH,

p5wizard