bash library to handle multiple scripts

lib-process.sh

#!/bin/bash

function launch_script()
{
    echo "launching ${@:1}"
    nohup run-process.sh ${@:1} 1>> /tmp/scripts.log 2>>/tmp/crashes.log &
}

function wait_process()
{
    echo "waiting"
    LOCKED=1

    while [ $LOCKED -ne 0 ]; do
        sleep 1
        LOCKED=`ls /tmp/processes/lock/ | wc -l`
        echo .
    done

}

ASYNC_PATH="$( cd "$( dirname "$0" )" && pwd )"
PATH_OK=`echo $PATH|grep $ASYNC_PATH | wc -l`

if [[ ! -x "$ASYNC_PATH/run-process.sh" ]]
then
    echo "turning run-process.sh into an executable"
    chmod +x $ASYNC_PATH/run-process.sh
fi

if [[ $PATH_OK -eq 0 ]]
then
    export PATH=$PATH:$ASYNC_PATH
    echo $PATH
fi