--- title: screen | zh tags: Guide, TWNIA3, TW GA: --- {%hackmd @docsharedstyle/default %} # screen 用 [**SSH** 登入**台灣杉三號**](https://man.twcc.ai/@TWCC-III-manual/Bk-pE62jd)後可以開啓 screen 進行多個互動式的 shell，避免因意外操作造成程式執行中斷或檔案傳輸失敗。 操作過程中可以暫時卸離（detach），需要使用時再重新連接（attach）即可繼續操作。 --- ### 常用指令介紹 :::warning <i class="fa fa-lightbulb-o" aria-hidden="true"></i> **說明：** 若需要查詢更多詳細指令 (分隔畫面、多方分享...等)，在登入 <b>screen</b> 介面後輸入 `man screen` 和 `info screen` 查詢相關指令。也可以從 <b>[Screen User's Manual](https://www.gnu.org/software/screen/manual/screen.html#Selecting)</b> 進行了解。 ::: - 開啟 <b>screen</b> 輸入 `screen` 開啟進入畫面，按下 <b>Space</b> 進入 <b>Screen</b> 模式 ``` xxx@HYdeMacBook-Air Desktop % screen ```  - 開啟新的 <b>screen session</b> 輸入 `screen -S (session_name)` ``` xxx@HYdeMacBook-Air Desktop % screen -S new_session ``` - 重新載入之前開啟的 <b>screen</b> 輸入 `screen -r (screen ID)` ``` xxx@HYdeMacBook-Air Desktop % screen -r There are several suitable screens on: 11618.myFirst_screen (Attached) 11607.ttys001.xxxdeMacBook-Air (Attached) Type "screen [-d] -r [pid.]tty.host" to resume one of them. xxx@HYdeMacBook-Air Desktop % ``` - <b>detached screen</b> 回到 terminal (<b>screen</b> 仍在背景執行) 使用 <b>ctrl</b>+<b>C</b> ``` xxx@HYdeMacBook-Air Desktop % ./longtask Doing stuff... Doing stuff... Doing stuff... Doing stuff... Doing stuff... Doing stuff... Doing stuff... Doing stuff... ``` ``` xxx@HYdeMacBook-Air Desktop % screen [detached] ``` - 列出在背景程式執行的項目 輸入`screen -ls` ``` xxx@HYdeMacBook-Air Desktop % screen -ls There are screens on: 19125.ttys004.xxxdeMacBook-Air (Detached) 18852.new_long_task (Attached) 18621.ttys004.xxxdeMacBook-Air (Detached) 19335.very_long_task (Attached) 18323.ttys004.xxxdeMacBook-Air (Detached) 5 Sockets in /var/folders/z4/w961r3ns5h3bkxc2v7575cqc0000gn/T/.screen. ``` - 顯示程式相關的全部資訊 輸入 `ps aux | grep (screen Name)` ``` xxx@HYdeMacBook-Air Desktop % ps aux | grep longtask xxx 16472 0.0 0.0 407962768 672 s001 R+ 9:57上午 0:00.00 grep longtask xxx 16387 0.0 0.0 408106960 1904 s012 S+ 9:56上午 0:00.07 /bin/bash ./longtask ``` - 刪除指定資訊 輸入 `screen -X -S (screen ID) quit` ``` xxx@HYdeMacBook-Air Desktop % screen -ls There are screens on: 17813.ttys001.xxxdeMacBook-Air (Attached) 11829.ttys001.xxxdeMacBook-Air (Detached) 2 Sockets in /var/folders/z4/w961r3ns5h3bkxc2v7575cqc0000gn/T/.screen. ``` ``` xxx@HYdeMacBook-Air Desktop % screen -X -S 11829 quit xxx@HYdeMacBook-Air Desktop % screen -ls There is a screen on: 17813.ttys001.xxxdeMacBook-Air (Attached) ``` - 關閉 <b>screen</b> 輸入 `exit` ``` h.y_lee@wrl-tc-171 ~ % screen [screen is terminating] h.y_lee@wrl-tc-171 ~ % ```