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  screen kullanımı: screen : diyerek yeni ekran açılır. screen -ls : screen listesini gösterir. screen -r : tek bir tane ekran açıksa o ekranı devam ettirir. ls den bakılan pid değeri yanına yazılırsa ilgili ekrana devam edilir. <pwd // bulunulan dizini gösterir. cd .. // istenilen dizine gider. touch // dosya oluşturur. ls // dizindeki dosyaları listeler. mkdir klasör oluşturur. top kullanımı : (https://phoenixnap.com/kb/top-command-in-linux) List All Processes To  list all running Linux processes  on your system, open a terminal and enter: top Sort Processes By default,  top  sorts the process list using the  %CPU  column. To sort processes using a different column, press one of the following keys: M . Sort by the  %MEM  column. N . Sort by  PID  column. T . Sort by the  TIME+  column. P . Sort by the  %CPU  column. In the following example, the process list is sorted by the  %MEM  column: Send a Signal Use the  top  command to send any signal to a running process. Press the 

  Disable Gatekeeper With Terminal To restore the legacy setting that lets you completely disable Gatekeeper, you’ll need to run a command in Terminal Terminal is macOS’s command line interface, and it’s easy to use once you get familiar with how Terminal works . To disable Gatekeeper, follow these steps: Launch Terminal from Applications > Utilities . Enter the following command: sudo spctl --master-disable Hit Enter and type your admin password. Hit Enter again.    Now, the Anywhere option should be available under the Allow apps downloaded from section of System Preferences > Security & Privacy > General . From here, you can change the setting to loosen or tighten Gatekeeper security whenever you want. But please remember that sidestepping any of macOS’s built-in saf