I executed bash -c "ps && ps"
and got the following output:
PID TTY TIME CMD
25544 pts/0 00:00:00 bash
26562 pts/0 00:00:00 bash
26563 pts/0 00:00:00 ps
PID TTY TIME CMD
25544 pts/0 00:00:00 bash
26562 pts/0 00:00:00 ps
And I'm confused why is the PID of last ps
the same as the PID of bash
which spawned it (26562
).
This seems to always affect the last command (if I have 3 commands given to bash
then the first 2 have different PIDs and and last reuses the bash
one).
Shouldn't the PIDs be different and shouldn't I be able to see it this behavior only if I prefix it with exec
?.