A signal is a message which can be sent to a running process. Signals can be initiated by programs, users, or administrators.

learn more… | top users | synonyms

8
votes
4answers
8k views

when does the system send a SIGTERM to a process?

My server program received a SIGTERM and stopped (with exit code 0). I am surprised by this, as I am pretty sure that there was plenty of memory for it. Under what conditions does linux (busybox) send ...
10
votes
1answer
8k views

How to suspend and resume processes like bash does

this question is a follow-up to: How to suspend and resume processes I have started firefox from a bash session in gnome-terminal. The process tree looks like this: $ ps -e -o pid,ppid,cmd -H 1828 ...
4
votes
3answers
339 views

What documentation shows the associated numbers for linux signals like SIGTERM and SIGKILL?

I can look around the internet and find that the associated number for SIGKILL is 9, but is there linux documentation (such as, a man page) showing the complete list of signals and their numbers?
8
votes
2answers
2k views

What causes various signals to be sent?

I sometimes get a little confused by all of the signals that an application can receive. As I understand it, an application has a default handler for each of these signals, but it can provide its own ...
2
votes
2answers
463 views

Is nohup indefinite?

If I run a program with an infinite loop with nohup, will the program run indefinitely (until the machine is reset or until I manually terminate it)?