linux - How to get child process from parent process -

is possible child process id parent process id in shell script?

i have file execute using shell script, leads new process process1 (parent process). process1 has forked process process2(child process). using script, i'm able pid of process1 using command:

cat /path/of/file/to/be/executed 

but i'm unable fetch pid of child process.

just use :

pgrep -p $your_process1_pid