Please explain in 1 or 2 sentences, you can simply copy paste output from Terminal where appropriate.
1) Run "ls -IF /" command on terminal. Try again without F. What is the output and what does it mean?
2) Run "ls", and then run "ls -a" command on terminal. What is the difference?
3) Use "cd" command to browese - /etc, /home, /bin, /tmp, /var directories. Use "ls" command to view their content.
4) What is the difference between the output of "ls ????e" and "ls g???e*" command?
5) Type "touch myfile{1,2,3}", then run "ls -l". What just happened? Now run, "chmod 777 myfile1", then run "chmod a+x myfile2". Now run "ls -l" again. Explain the changes in
file permissions as a result.
6) Now run "rm myfile*", then run "ls -l". What happened?
7) Observe the output of "ps u" and "top" commands, press q to exit from "top". Are there similarities, differences?
8) Find the PID of a process using "top" command, then use "kill PID" to kill it.
9) Run "ps -eo pid,ppid,cmd, %mem,%cpu --sort=-%cpu | head" in terminal and interpret the output.
10) Run "ps aux | less" and observe output.