NOHUP(1) |
FreeBSD General Commands Manual |
NOHUP(1) |
NAME
nohup —
invoke a utility immune to hangups
SYNOPSIS
nohup |
[ --] utility [ arguments] |
DESCRIPTION
The
nohup utility invokes
utility 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.
Some shells may provide a builtin nohup command which is similar or identical to this utility. Consult the builtin(1) manual page.
ENVIRONMENT
The following variables are utilized by
nohup:
-
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.
-
PATH
-
Used to locate the requested
utility if the name contains no ‘
/
’ characters.
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 will be that of utility.
STANDARDS
The
nohup utility is expected to be IEEE Std 1003.2 (“POSIX.2”) compatible.
BUGS
Two or more instances of
nohup can append to the same file, which makes for a confusing output.