May 27, 2009

Why my shell script is always "stopped" ?

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This is the problem that drives me crazy. I let a script A (a.sh) call script B (b.sh).
I used
nohup a.sh &>/tmp/log &

In script A it calls B directly, without any redirecting or nohup or background.

Script A:

#do nothing but call B
ssh another-machine "/user/tom/b.sh"

Script B:

# do some fancy things, takes about 1 hour to finish
...

I used
nohup a.sh &>/tmp/log &

It was "stopped" after 5 minutes but B was running and B finished correctly.

Anybody knows why?

BTW, if I don't use nohup and backgrounding, it's OK. i.e. if I use
a.sh
directly. Everything is OK. I am totally confused.