how to make a current running process ignore SIGHUP signal?

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11-24-2003

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how to make a current running process ignore SIGHUP signal?

I ask this question since sometimes i run a time-consuming ftp in foreground and forget to use nohup ftp.sh & to put this work background and can still running after i log off.
Assume this ftp task have run 1 hour, and still 1 hour time to end,
i don't want to abort the ftp, first, i use ctrl+Z and bg %% to put this process background, but how can i make this task still running after i log off just like nohup do?

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11-24-2003

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Use the -p option for nohup. See the man page for nohup(1)

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Thanks for reply, but the -p option is only supported on SOLARIS 9 and not supported by most platform, like AIX, HPUX, even SOLARIS 8.

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12-02-2003

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what about writing a ftp daemon process.
your daemon will have 2 forks, (as per the standard daemon in stevens) the second child will exec your ftp program and before that it will catch the sighup or whatever signals you want.

Tell me if you need more help, this one interests me!

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