Can kill in bash only send a signal from the current shell process to a process group? That is the impression from the posts that I have had so far.

Can kill in bash send a signal only to a single process whose process group has other process(es)?

In Linux, is a signal always sent from a process or the kernel to a process group, instead of to a single process?

Thanks.

Can kill in bash only send a signal from the current shell process to a process group? That is the impression from the posts that I have had so far.

Can kill in bash send a signal only to a single process whose process group has other process(es)?

In Linux, is a signal always sent from a process or the kernel to a process group, instead of to a single process?