Assignment $1$ and $3$ have been solved here before

Assignment $5$: Monitoring tools: an introduction to some of the UNIX administrative commands.

In this exercise follow the directions for Assignments $1$ and $3,$ Part $1.$ When a question is asked, put your answers in a file called: admin.docx. For answers consult the man pages and any other Internet sources you can find. Also append to this file the results of doing the following UNIX command$-$line steps on the lxcluster. Bear in mind that different UNIX systems will use variants for administrative command line options and output! You may have the ability to use the sudo$(1)$ command to install these tools.

Step $0$:

$$ Question $1$: what is the purpose of the ps $(1)$ command?

$$ Execute the ps $$efl $|$ more command

$$ Question $2$: what is the meaning of the values under the following column headers: UID, PID PPID, C$,$ PRI, and SZ$?$

Step $1$:

$$ Question $3$: what is the purpose of the time $(1)$ command?

$$ Execute the command time ps$-$efl

$$ Question $4$: what is the meaning of the time output?

Step $2$:

$$ Question $5$: what is the purpose of the ip $(8)$ command?

$$ Execute the ip addr command

$$ Question $6$: what is the name of the network loopback device?

$$ Question $7$: what are the IP addresses $($NOT the MAC address$)$ of all active network interface devices?

Step $3($skip this one because the networking tools are not installed$)$; to install use: $ sudo apt install net$-$tools

$$ Question $8$: what is the purpose of the netstat$(8)$ command

$$ Execute the netstat $$a $|$ more command

$$ Question $9$: what is the meaning of the state terms: LISTEN, SYN$\_$SENT, SYN$\_$RECV, ESTABLISHED, FIN$\_$WAIT$\_1,$ and FIN$\_$WAIT$\_2?$

Step $4$:

$$ Question $10$: what is the purpose of the vmstat$(8)($may be called vm$\_$stat$(1)$ instead?$)$

$$ Question $11$: what is the purpose of the optional parameters?

$$ Execute the vmstat command $($with no parameters$)$

$$ Question $12$: What is the meaning of the fields displayed?

Step $5($skip this one as the networking tools are not installed$)$; to install use: $ sudo apt install sysstat

$$ Question $13$: what is the purpose of the iostat$(1)$ command?

$$ Execute the iostat command $($note: the output may not be well formatted$)$

$$ Question $14$: what is the meaning of the values under the column headings?