NOHUP(1)                NetBSD General Commands Manual                NOHUP(1)

NAME
     nohup -- invoke a command immune to hangups

SYNOPSIS
     nohup utility [arg ...]

DESCRIPTION
     The nohup command allows the specified utility to be protected from ter-
     mination 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 exe-
     cutes 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 ter-
     minal, 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.

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.

ENVIRONMENT
     The following variable is used by nohup.

     HOME  User's home directory.

SEE ALSO
     signal(3)

STANDARDS
     The nohup command is expected to be IEEE Std 1003.2 (``POSIX.2'') compat-
     ible.

NetBSD 5.0_STABLE                July 15, 2005               NetBSD 5.0_STABLE
