Crtl-C Kills Nohup Background Processes
This page answers questions like these:
- Why is Ctrl-C Killing My Background Processes?
- Why does Ctrl-C Kill My Background Processes?
- Why is Ctrl-C Killing My Nohup Processes?
- Why does Ctrl-C Kill My Nohup Processes?
Why is Ctrl-C Killing My Background Processes?
On some systems, using Ctrl-C to kill the currently running process will also kill sub-processes, even if they've been started with nohup.
To remedy this, the subprocesses need to be started using setsid as follows:
setsid nohup COMMAND &
- setsid runs its first argument (nohup) with a new Process Group ID, thus stopping Ctrl-C from killing it.
- nohup runs its first argument (COMMAND) such that it will ignore hangup signals (SIGHUP).
- & runs setsid in the background.
- This command can be used on the command line or inside a shell script.
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Tags: ctrl c, kills background processes, kills, nohup, background, processes, linux, unix