Re: Question about what programs to use in /etc/rc*

[Adrian Filipi-Martin]

On Sun, 9 Sep 2001, Ulf Zimmermann wrote:

> These are some examples strings:
>
> "dhcp"
> "dhcp media 10baseTX"
> "media 10baseTX dhcp mediaopt half-duplex"
>
> The following code will get me inside a if condition:
>
>       if [ `expr "${ifconfig_args}" : '.*[Dd][Hh][Cc][Pp].*'` -ne 0 ]; then
>
>               ....
>
>       fi

        You do everything you need within sh.  Someone else pointed out
that case/esac is your friend here.  It was not quite complete.  Here's
more complete example that will let you pair up the options and their
arguments if they take them.

ifconfig_args="media 10baseTX dhcp mediaopt half-duplex"
set -- ${ifconfig_args}
while [ $# -gt 0 ]; do
    op=$1
    case ${op} in
        [Mm][Ee][Dd][Ii][Aa])
            op_arg=$2
            shift
            echo "op=media op_arg=${op_arg}"
            ;;
        [Mm][Ee][Dd][Ii][Aa][Oo][Pp][Tt])
            op_arg=$2
            shift
            echo "op=mediaopt op_arg=${op_arg}"
            ;;
        [Dd][Hh][Cc][Pp])
            echo "do something dhcp specific..."
            ;;
        *)
            echo "unknown op: ${op}"
            ;;
    esac
    shift
done

cheers,

        Adrian
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