我怎样才能在后台运行一个shell脚本?
你可以直接切换屏幕,在第二个屏幕上运行你的脚本。 当脚本在第二个屏幕上开始运行时,再切换回第一个屏幕,做你想做的事情。第二屏幕将作为额外的终端窗口在后台运行,即使你在第一屏幕上关闭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将在你的活动屏幕会话中创建一个新的"窗口"。你可以用ctrl+a,n<在多个窗口之间切换(如Ansgar所示);/kbd>为下一个窗口,ctrl+a,p为前一个窗口。
ctrl+a,"会给你一个所有打开窗口的列表。
更多: https://superuser.com/questions/476709/quickly-switching-between-virtual-sessions-screen