Performing Basic Linux Tasks

Question 1

Is the CLI the same on all Linux distros?

Answer 1

No. This will be distro specific (i.e. Red Hat/CentOS/Ubuntu)

Question 2

What does /bin/sh typically do?

Answer 2

This typically links to another shell on the OS like /bin/bash or /bin/dash

Question 3

What is the binary location for Red Hat / CentOS distros?

Answer 3

/bin/bash

Question 4

What is the binary location for Ubuntu or Debian based distros?

Answer 4

/bin/dash

Question 5

What does the command ‘uname’ do?

Answer 5

Prints system information

Question 6

What does the command ‘uname -a’ do?

Answer 6

Prints all system information (kernel release, kernel version, network node name, architecture etc.)

Question 7

What does the command ‘ls’ do?

Answer 7

This command lists all the current directories and files in your current working path, or, a path that you specifiy - but not hidden files

Question 8

What does the command ‘mkdir’ do?

Answer 8

This command makes a directory within your current working path or one that you specifiy

Question 9

What does the command ‘cd’ do?

Answer 9

This command is used to change directories

Question 10

What does the command ‘pwd’ do?

Answer 10

This command is used to show the path of your current working directory

Question 11

What does the command ‘echo’ do?

Answer 11

This command is used to display a line (or lines) of text

Question 12

What does the command ‘touch’ do?

Answer 12

This command is used to change file timestamps, create files within your current working directory, or within a directory that you specify

Question 13

What does the command ‘cp’ do?

Answer 13

This command is used to copy files and directories

Question 14

What are three commands that you can use to view files from within the CLI?

Answer 14

• cat
• more
• less

Question 15

What are three commands that you can use to edit files from within the CLI?

Answer 15

• vim
• nano
• gedit

Question 16

What does the command ‘cat’ do?

Answer 16

This command is used to concatenate files and print them on the standard output (to the console)

Question 17

What does the command ‘more’ do?

Answer 17

This command is a file perusal filter and allows you to view the contents of a file a page at a time.

Question 18

What does the command ‘less’ do?

Answer 18

This command is similar to more, but has many more features. Less does not have to read the entire input file before starting so it can be much faster when it comes to large input files