screen

• 新建一个屏幕：screen -S name ./frp 启动一个名字为name的screen；

• 枚举所有的屏幕：screen -ls 是列出所有的screen；

• 跳转到某一个屏幕：screen -r name或者id，就可以回到某个screen了；

• 切换到上一个屏幕：ctrl + a + d 可以回到前一个screen，当时在当前screen运行的程序不会停止；

• 退出当前屏幕：输入命令 exit

• 查看帮助信息screen -h

  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.
  -Q            Commands will send the response to the stdout of the querying process.
  -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 4.03.01 (GNU) 28-Jun-15".
  -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.