Date: Sat, 13 Mar 1999 16:38:19 +0000 (GMT) From: "Ben J. Cohen" <bjc23@hermes.cam.ac.uk> To: sporkl@ix.netcom.com Cc: questions@FreeBSD.ORG Subject: Re: Redirection of processes and of X clients Message-ID: <Pine.BSF.4.05.9903131621460.257-100000@bjc23.trin.cam.ac.uk> In-Reply-To: <Pine.BSF.4.05.9903131115400.626-100000@nyc-ny77-30.ix.netcom.com>
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On Sat, 13 Mar 1999, Spike wrote: >> >> Firstly, is it possible to change the terminal a program is attached to >> >> while it is running? >> >I don't believe what you want is at easily feasible. A process sent to the >> >background is still attached to your terminal. What you want to do is set >> >the STDIN, STDOUT, and STDERR file descriptors to a different terminal. >> >Unless the program supports the ability to reassign its STD* file >> >descriptors, I don't think you can do this. >> >> That is basically what I want to do. >> Does the program which is being "moved" have to support the reassignment >> or is it sufficient to get another program to do it? > >I suppose you could make a program that would run a second program with >that second program's STD* file descriptors pointing at the first program, >and then the first program would wait for, SIGUSR1, or specific user >input, and then accept a filename to re-direct it's STD* file descriptors >to and therefor the second program's as well. It shouldn't be that hard to >write, but I'm not very good with C. I think I will give it a try though. >Don't expect too much. This isn't quite what I wanted, because (presumably) programs which are to support this would have to be patched. Perhaps to do this in general (i.e., without modifying applications) would need kernel-level modifications. Thanks, Ben. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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