Why was it necessary to run ps as root (prefacing the command with sudo)?
Step 1. Access the command line.
a. Log on to the CyberOps Workstation VM as the analyst, using the password cyberops. The account analyst is used as the example user account throughout this lab.
b. To access the command line, click the terminal icon located in the Dock, at the bottom of VM screen. The terminal emulator opens.
Step 2. Display the services currently running.
a. Use the ps command to display all the programs running in the background:
[analyst@secOps ~]$ sudo ps –elf
[sudo] password for analyst:
F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME CMD
4 S root 1 0 0 80 0 - 2250 SyS_ep Feb27 ? 00:00:00 /sbin/init
1 S root 2 0 0 80 0 - 0 kthrea Feb27 ? 00:00:00 [kthreadd]
1 S root 3 2 0 80 0 - 0 smpboo Feb27 ? 00:00:00 [ksoftirqd/0]
1 S root 5 2 0 60 -20 - 0 worker Feb27 ? 00:00:00 [kworker/0:0H]
1 S root 7 2 0 80 0 - 0 rcu_gp Feb27 ? 00:00:00 [rcu_preempt]
1 S root 8 2 0 80 0 - 0 rcu_gp Feb27 ? 00:00:00 [rcu_sched]
1 S root 9 2 0 80 0 - 0 rcu_gp Feb27 ? 00:00:00 [rcu_bh]
1 S root 10 2 0 -40 - - 0 smpboo Feb27 ? 00:00:00 [migration/0]
1 S root 11 2 0 60 -20 - 0 rescue Feb27 ? 00:00:00 [lru-add-drain]
5 S root 12 2 0 -40 - - 0 smpboo Feb27 ? 00:00:00 [watchdog/0]
1 S root 13 2 0 80 0 - 0 smpboo Feb27 ? 00:00:00 [cpuhp/0]
5 S root 14 2 0 80 0 - 0 devtmp Feb27 ? 00:00:00 [kdevtmpfs]
1 S root 15 2 0 60 -20 - 0 rescue Feb27 ? 00:00:00 [netns]
1 S root 16 2 0 80 0 - 0 watchd Feb27 ? 00:00:00 [khungtaskd]
1 S root 17 2 0 80 0 - 0 oom_re Feb27 ? 00:00:00 [oom_reaper]
Some processes do not belong to the analyst user and may not be displayed if ps was executed as analyst, which is a regular user account.
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