Ausführen eines Skripts bei Einstecken des Netzwerkkabels

linux:~ # file /sbin/ifup*
/sbin/ifup:      Bourne-Again shell script text
/sbin/ifup-dhcp: Bourne-Again shell script text

execute an individual poststart script if available
        # NOTE: 'eval echo' in the next line is necessary to expand settings
        # like POST_UP_SCRIPT="~root/bin/foo"
[b]POST_UP_SCRIPT="/pfad/zum/script"[/b]

        for SCRIPT in `eval echo $POST_UP_SCRIPT scripts/$POST_UP_SCRIPT`; do
                if [ -x "$SCRIPT" -a ! -d "$SCRIPT" ] ; then
                        debug "executing additional start script $SCRIPT"
                        $SCRIPT $CONFIG $INTERFACE ${OPTIONS:+-o $OPTIONS}
                fi
        done

#!/bin/bash
echo hallo >> ausgabe

#!/bin/bash 
 /bin/echo hallo >> /tmp/ausgabe