I created a batch file (./mybatch) that need to run few programs
at a sequnece but i need a command like the DOS call command in order
to return to the main batch file to proceed the sequence
example:
cd /dir1/path/dir2
invoke program1
cd /dir3/path2/ <--- i want to return here
Assume you have the "programs" p1, p1, p3
cd path1
nohup p1 > p1.log &
cd path2
nohup p2 > p2.log &
cd path3
nohup p3 > p3.log
wait
At least this is what I think you are asking.
Thanks for the answer !
I understand that you run the programs at bg but why do you write
them as files ?
why the last one is not at bg? 
And why is the wait instruction at the end ?