2015-09-21 17:35:36 +0200, Jilles Tjoelker: [...] > This kind of job control manipulation is very hard to get right in the > general case. FreeBSD's su does it, and it needed various iterations to > fix hanging processes or unexpected logouts, some of which only occur > when the application is started from certain shells. > > Also, it is not possible to fix generally cases like > su SOMEUSER -c 'while sleep 0.1; do echo @@@; done' | less > where there are other processes in the same process group as the one > doing job control manipulations. If su changes the tty's foreground > process group, it will prevent less from reconfiguring terminal modes. [...]
What was the rationale for adding that to "su"? I'd have expected job control to be only done by interactive applications. -- Stephane
