如何在后台运行shell脚本？

Question

如何在后台运行 shell 脚本？

Answer 1

根据您的需要，只需在命令末尾添加 &

script.sh &
command &

如果您在终端中运行它，然后想关闭终端，请使用 nohup 或 disown

诺哈普

nohup script.sh &

否认

script &
disown

如果这不是您所追求的，请在您的问题中更具体。

Answer 2

您只需切换屏幕并在第二个屏幕上运行脚本即可。当脚本从 2 号开始时，切换回 1 号并做任何您想做的事情。第二个屏幕将在后台作为额外的“终端窗口”。即使您在第一个屏幕上关闭 ssh 连接，它也不会停止处理。

screen --help
Use: screen [-opts] [cmd [args]]
 or: screen -r [host.tty]

Options:
-4            Resolve hostnames only to IPv4 addresses.
-6            Resolve hostnames only to IPv6 addresses.
-a            Force all capabilities into each window's termcap.
-A -[r|R]     Adapt all windows to the new display width & height.
-c file       Read configuration file instead of '.screenrc'.
-d (-r)       Detach the elsewhere running screen (and reattach here).
-dmS name     Start as daemon: Screen session in detached mode.
-D (-r)       Detach and logout remote (and reattach here).
-D -RR        Do whatever is needed to get a screen session.
-e xy         Change command characters.
-f            Flow control on, -fn = off, -fa = auto.
-h lines      Set the size of the scrollback history buffer.
-i            Interrupt output sooner when flow control is on.
-l            Login mode on (update /var/run/utmp), -ln = off.
-ls [match]   or -list. Do nothing, just list our SockDir [on possible matches].
-L            Turn on output logging.
-m            ignore $STY variable, do create a new screen session.
-O            Choose optimal output rather than exact vt100 emulation.
-p window     Preselect the named window if it exists.
-q            Quiet startup. Exits with non-zero return code if unsuccessful.
-r [session]  Reattach to a detached screen process.
-R            Reattach if possible, otherwise start a new session.
-s shell      Shell to execute rather than $SHELL.
-S sockname   Name this session <pid>.sockname instead of <pid>.<tty>.<host>.
-t title      Set title. (window's name).
-T term       Use term as $TERM for windows, rather than "screen".
-U            Tell screen to use UTF-8 encoding.
-v            Print "Screen version 4.01.00devel (GNU) 2-May-06".
-wipe [match] Do nothing, just clean up SockDir [on possible matches].
-x            Attach to a not detached screen. (Multi display mode).
-X            Execute <cmd> as a screen command in the specified session.

ctrl+ a，c将在活动屏幕会话中创建一个新的“窗口”。您可以在多个窗口之间切换（如 Ansgar 所示），使用ctrl+表示下一个窗口，使用+表示上一个窗口。anctrlap

ctrl+ a，"将为您提供所有打开的窗口的列表。

更多： https: //superuser.com/questions/476709/quickly-switching- Between- virtual-sessions-screen

Answer 3

如果您希望脚本在关闭终端后保留，另一种选择是使用setsid：

setsid script.sh

有关之间差异的详细信息nohup，disown，&和setsid：nohup的，不认与和之间的区别