NOHUP(1) OpenBSD Reference Manual NOHUP(1)NAMEnohup - invoke a command immune to hangups
SYNOPSISnohup utility [arg ...]
DESCRIPTION
The nohup command allows the specified utility to be protected from
termination if the user should become logged out (for example, due to a
modem line or TCP/IP connection being dropped). To do this, nohup sets
the SIGHUP signal(3) (``terminal line hangup'') to be ignored, then
executes utility along with any arguments.
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.
If the output file nohup.out cannot be created in the current directory,
nohup attempts to create the file in the user's home directory. If the
file nohup.out cannot be created, either in the current directory or the
user's home directory, nohup will exit without invoking utility, with an
exit value as described below.
ENVIRONMENT
HOME User's home directory.
EXIT STATUS
The nohup utility exits 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.
SEE ALSOcsh(1), signal(3)STANDARDS
The nohup utility is compliant with the IEEE Std 1003.1-2008 (``POSIX'')
specification.
nohup also exists as a built-in to csh(1), though with a different
syntax.
OpenBSD 4.9 September 29, 2010 OpenBSD 4.9
