nohup - invoke a command immune to hangups
nohup utility [arg ...]
The nohup utility invokes command with its arguments and at
this time
sets the signal SIGHUP to be ignored. If the standard output is a terminal,
the standard output is appended to the file nohup.out
in the current
directory. If standard error is a terminal, it is directed
to the same
place as the standard output.
The nohup utility shall exit with one of the following values:
126 The utility was found but could not be invoked.
127 The utility could not be found or an error occurred in
nohup.
Otherwise, the exit status of nohup shall be that of
utility.
HOME If the output file nohup.out cannot be created in the
current directory,
the nohup utility uses the directory named by
HOME to create
the file.
signal(3)
The nohup command is expected to be IEEE Std 1003.2
(``POSIX.2'') compatible.
OpenBSD 3.6 June 6, 1993
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