pdeathsigexec cmd ...
pdeathsigexec: signal process when parent exits
A subprocess whose parent exits may be re-parented to init (PID 1)
and continue to run. pdeathsigexec sets the process to have a signal
sent if the parent process terminates.
The "signal on parent termination" behaviour applies to the executed process only and not descendents (prctl(2)):
The parent-death signal setting is cleared for the child of a fork(2).
It is also (since Linux 2.4.36 / 2.6.23) cleared when executing a
set-user-ID or set-group-ID binary, or a binary that has associated
capabilities (see capabilities(7)); otherwise, this value is preserved
across execve(2).
$ sh -c "sleep inf" &
[1] 25880
$ kill -9 25880
$ pgrep -fa sleep
25882 sleep inf
$ sh -c "pdeathsigexec sleep inf" &
[1] 25926
$ kill -9 25926
$ pgrep -fa sleep
<no output>
cargo build
-s/--signal
: set the termination signal (default 9 (SIGKILL))
None.