`nohup': Run a command immune to hangups
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`nohup' runs the given COMMAND with hangup signals ignored, so that
the command can continue running in the background after you log out.
Synopsis:
nohup COMMAND [ARG]...
`nohup' increases the scheduling priority of COMMAND by 5, so it has
a slightly smaller chance to run. If standard output is a terminal, it
and standard error are redirected so that they are appended to the file
`nohup.out'; if that cannot be written to, they are appended to the
file `$HOME/nohup.out'. If that cannot be written to, the command is
not run.
If `nohup' creates either `nohup.out' or `$HOME/nohup.out', it
creates it with no "group" or "other" access permissions. It does not
change the permissions if the output file already existed.
`nohup' does not automatically put the command it runs in the
background; you must do that explicitly, by ending the command line
with an `&'.
The only options are `--help' and `--version'. Note:Common
options.