USER: The username of the process owner or the user ID if the name can’t be determined. Meters – Changes the behavior of the meter in the header Display Options – Customizes some of the htop display options Colors – Chooses a color theme for the htop Columns – Chooses what columns need to be displayed for the processes in the htop. INTERACTIVE COMMANDS This is where we can use various options in htop utility tool. htop provides a list containing all the running processes on the system being monitored. -d --delay=DELAY Delay between updates, in tenths of seconds -C --no-color --no-colour Start htop in monochrome mode -h --help Display a help message and exit -p --pid=PID,PID... Show only the given PIDs -s --sort-key COLUMN Sort by this column (use --sort-key help for a column list) -u --user=USERNAME Show only the processes of a given user -v --version Delay between updates, in tenths of seconds-d --delay=DELAY. Pressing F2 or s opens up the htop setup with 4 main items. By default, htop shows colored status bars for processors, memory, and swap. To add a column, click on the appropriate column name in Available Columns. According to htop’s man page, the columns shown by default are to be read the following way: PID: The process ID. PRI: process priority by the kernel. You can adjust its place in the htop output by clicking on it in Active Columns and moving it up or down with F7 or F8 respectively. With this, the chosen column should show under Active Columns. Htop Setup Menu. F10 to save the changes and it's done. 'R' is the easiest; the process is ready to run, and will run whenever its turn to use the CPU comes. 'S' and 'D' are two sleep states, where the process is waiting for something to happen. Click F5 -> Add. Instead of CPUs (1/1) in the left column, select CPUs (1/2) for the left column and CPUs (2/2) for the right column. VIR: virtual memory the process is consuming. htop command in Linux system is a command line utility that allows the user to interactively monitor the system’s vital resources or server’s processes in real time. # htop [-dChusv] –d – delay (shows the delay between updates (in tenths of seconds)) –C – no-color (monochrome mode) –h – help (display the help message and exit) –u – user=USERNAME (show only the processes of a given user) –h – pid=PID, (show only the … Sort by the column-s --sort-key COLUMN. Show processes in tree view-t --tree Go to settings (F2), under Meters, you select what is in the left column and what in the right column. w: S -- Process Status The status of the task which can be one of: 'D' = uninterruptible sleep 'R' = running 'S' = sleeping 'T' = traced or stopped 'Z' = zombie Tasks shown as running should be more properly thought of as 'ready to run' -- their task_struct is simply represented on the Linux run-queue. You may need to know the PID of a process in order to kill it, or the TTY so you can return to the open process by reattaching to the correct terminal window. You can remove a column from Active Columns with F9. htop [-dChustv] Options:-d --delay=DELAY Delay between updates, ... Show only the given PIDs -s --sort-key COLUMN Sort by this column (use --sort-key help for a column list) -u --user=USERNAME Show only the processes of a given user -v --version Output version information and exit -t --tree Show processes in tree view htop … USER: process owner. From left to right, the bars are colored green, blue, yellow, and red depending on some thresholds. COMMAND-LINE OPTIONS. Different for real-time processes. Each column on the header represents the following: PID: process ID number. PRI: The kernels internal priority for the process, usually just its NI value plus twenty. 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