Hi all,

i have a script called a.sh and within a.sh it calls b.sh.

when i do a ps -ef | grep a.sh, i get two sets of number

user_test 4225 3250 0 10:31 pts/1 00:00:00 a.sh

when i do a ps -ef | grep b.sh, i get two sets of number

user_test 4269 4225 22 10:31 pts/1 00:00:45 b.sh

why are there there two sets of numbers? which is the pid of a.sh and b.sh respectively?