![]() ![]() Let’s define a few new terms from the screenshot: The -f flag (full format) instructs the ps command to list detailed information about the processes. The -e flag tells the ps command to list all the processes If you wish to display the output in UNIX format, then execute the ps command with a combination of -ef flags ~]$ ps -ef ![]() START – This is the time the process started running.STAT – This points to the process state code e.g S (sleeping), Z (zombie) and R (Running).RSS – This is the size/amount of physical memory being used by a process.VSZ – This is the size of virtual memory of each process in kilobytes.%MEM – This is the % of the physical memory used up by the process.%CPU – This it the percentage CPU usage of each process.PID – This is the Process ID of the process.USER – This specifies the user running the process.The x flag lists processes that are usually started upon a system boot as well as background processes. It provides more detailed information associated with the running processes. The -u flag implies a user-oriented format. This, however, excludes the processes associated with a specific terminal. The -a flag instructs ps to display all the processes from all the users. To list the processes in BSD format, run the command $ ps -aux ![]() ~]$ ps -e 4) Displaying output in BSD format To get an overview of all the running processes on your Linux system use the -A flag as shown: ~]$ ps -AĪlternatively, you can also use the – e flag as shown. ~]$ 3) Displaying all the running processes on your system To list the processes associated with the terminal you are currently running, execute the command: ~]$ ps -T This is much like the listing the processes in the shell. CMD: Name of the command that started the process.Ģ) Listing processes associated with a terminal.TIME: This is the time / cumulative time that a process has run for.TTY: This refers to the terminal that started and is controlling the process.The following example will output the highest memory process in batch mode. We can use top batch mode to capture the process info. press the up or down arrow until the %MEM choice is highlighted.press Shift+f to enter the interactive menu.Sort By memory Usage per-process in the top command interactive menu Tip: A leading ‘+’ will force sorting high to low, whereas a ‘-” will ensure a low to high ordering. This will sort the process by memory usage. This will display the information about the current running processes on your system. The best way to sort the top command by memory usage is by pressing shift+m after running the top command. sort mem usage per process in the interactive menu.press shift+m after running the top command.3 Ways to Sort Top Command by memory usage The top command is a useful tool for understanding what processes are running on your system and how they’re using resources. It can also be used to see the PID, username, and command line for each process. The top command can be used to see the CPU usage, memory usage, and swap usage for each process. The top command in Linux is used to display information about the current running processes on your system. Below we collect 3 ways to sort processes by memory. The default sorting key is %CPU on Linux. Top is a very powerful command to periodically display a sorted list of system processes. ![]()
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