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Operating Systems Solaris What's the difference: 'nuhup cmds' Vs 'cmds &' Post 51177 by billshu on Wednesday 12th of May 2004 04:22:20 PM
Old 05-12-2004
Thanks for reply.

Yes, I knew the "script_name &" can put it background and I can logout, then check it next time login. Suppose the script doesn't trap any signal, or exit on signal, just an infinite loop and sleep, my confusion is if "script_name & " can have the job done, why prefer to use 'nohup'? What's benificial of using 'nohup'?

"man nohup" says it immune to SIGHUP. From user's point of view, if I don't trap or exit on SIGHUP, is there any reason that I must or better use "nohup" to start the script?
 

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NOHUP(1)                                                           User Commands                                                          NOHUP(1)

NAME
nohup - run a command immune to hangups, with output to a non-tty SYNOPSIS
nohup COMMAND [ARG]... nohup OPTION DESCRIPTION
Run COMMAND, ignoring hangup signals. --help display this help and exit --version output version information and exit If standard input is a terminal, redirect it from an unreadable file. If standard output is a terminal, append output to 'nohup.out' if possible, '$HOME/nohup.out' otherwise. If standard error is a terminal, redirect it to standard output. To save output to FILE, use 'nohup COMMAND > FILE'. NOTE: your shell may have its own version of nohup, which usually supersedes the version described here. Please refer to your shell's doc- umentation for details about the options it supports. AUTHOR
Written by Jim Meyering. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report nohup translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
Full documentation at: <http://www.gnu.org/software/coreutils/nohup> or available locally via: info '(coreutils) nohup invocation' GNU coreutils 8.28 January 2018 NOHUP(1)
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