There may be a time that you want to run a script like "dothis.sh" multiple times concurrently (simultaneously) - the following script runs 5 concurrent instances of "dothis.sh":
#!/bin/bashYou can update CONCURRENT_INSTANCES to be whatever number you desire, but use with caution as you don't want to slam your server.
CONCURRENT_INSTANCES=5
for i in `seq 1 $CONCURRENT_INSTANCES`
do
/path/to/dothis.sh &
done