| 1234567891011121314151617181920212223 | #!/bin/shif ! [ -a dev/console ] ;then    if [ "$USER" = "root" ]; then        MKNOD="mknod"    else        MKNOD="sudo mknod"    fi        $MKNOD dev/console c 5 1     $MKNOD dev/ttyAMA0 c 204 64    $MKNOD dev/ttyAMA1 c 204 65    $MKNOD dev/ttyS000 c 204 64    if [ $? -ne 0 ] ;    then        echo "'mknod dev/console c 5 1' failed!"        echo "You are not 'root' or you have not sudo privilege."    fifi
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