Linux: Instructions for using Process Management command on Linux

  • Create proceses
  • Lists the jobs running in the background, giving the job number
  • Bring a background job to the foreground
  • Change suspend the current foreground job to background
  • nohup command: when using the command shell , prefixing a command with nohup being aborted automatically when you log out or exit the shell
  • Kill processes: Signals are software interrupts. They provide a way for user (or a process) to directly communicate with a process. Signals can be sent with the kill command
  • List of signals
  • killall command: sends a signal to all processes running any of the specifies command. If no signal name is specifies, SIGTERM is sent
  • pgrep and pkill command: looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout
  • screen command: It creates a single window with a shell in it (or the specified command) and then gets out of your way so that you can use the program as you normally would
  • Install screen package
  • Start screen
  • Start screen with session name (description for screen session)
  • Restore screen
  • List all screen session
  • tmux command: a terminal multiplexer. It lets you switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal
  • Install tmux package
  • Start new tmux session
  • Start tmux with session name (description for screen session)
  • Prefix will be used to refer to either the default CTRL+b
  • screen command
    • Method 1: “Ctrl-A” and “d” to detach the screen
    • Method 2: Terminated screen
  • Kill the screen: Use “Ctrl-A” and “K”
  • Kill all process with vi command
  • Use to pkill
  • ps command is the classic Unix/Linux command to list processes and their details
  • with no arguments, ps lists the processes associated with the current terminal
  • The columns that are displayed can be customized. For example
  • To view details of a specific process using its PID
  • View all processes on your system
  • uptime command: Tell how long the system has been running
  • free command: Display amount of free and used memory in the system
  • watch command: displaying its output and errors (the first screenfull). This allows you to watch the program output change over time. By default, the program is run every 2 seconds. By defaults, watch will run until interrupted
  • Highlight different between updates
  • Customize update interval
  • top command provides a dynamic real-time view of a running system

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