To check the running processes on an Ubuntu Linux system using the command line, you can use the ps command. This command displays a list of processes currently being executed on the system, including the process ID, the command that started the process, and the user that owns the process.
To check the running processes on an Ubuntu Linux system, open a terminal window and run the following command:
ps aux
The ps command will display a list of all processes currently being executed on the system, including the process ID, the command that started the process, the user that owns the process, the CPU and memory usage of the process, and the status of the process.
For example, the output might look something like this:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 46772 5180 ? Ss 00:50 0:00 /sbin/init root 2 0.0 0.0 0 0 ? S 00:50 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S 00:50 0:00 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< 00:50 0:00 [kworker/0:0H] root 6 0.0 0.0 0 0 ? S 00:50 0:00 [kworker/u4:0] root 7 0.0 0.0 0 0 ? S 00:50 0:00 [migration/0] root 8 0.0 0.0 0 0 ? S 00:50 0:00 [rcu_bh] root 9 0.0 0.0 0 0 ? S 00:50 0:00 [rcu_sched] root 10 0.0 0.0 0 0 ? S 00:50 0:00 [lru-add-drain] root 11 0.0 0.0 0 0 ? S 00:50 0:00 [watchdog/0]
In this example, the ps command is displaying a list of processes running on the system, including the init process (PID 1), the kthreadd process (PID 2), and the ksoftirqd/0 process (PID 3). The USER column shows the user running the command.