On Wednesday, April 10, 2013 02:43:12 PM Ilya Basin wrote: > Hi. > I have a script that creates some background tasks. > I want the whole tree to be killed by Ctrl-C.
"tree"? If a script isn't coordinating with its subprocesses manually, then the only real guaranteed way to kill a process and all its descendants recursively is to use something like Linux cgroups or BSD jails. A tree of descendants isn't normally maintained by an OS for each process. You would have to go through every running process and walk the PPID chain to build a tree, and this will always be racy. > There's a requirement that the script process and its children must > belong to the same process group. This is why I can't enable job > control. > > I don't want to use 'trap', because it adds complexity. > trap is the standard (only) way to handle signals in shell. They don't have to be complicated. http://mywiki.wooledge.org/ProcessManagement http://mywiki.wooledge.org/SignalTrap -- Dan Douglas
