UBUNTU BASIC COMMANDS 1

Question 1

allows you to run programs or other commands with administrative privileges, just like “Run as administrator” in Windows.

Answer 1

sudo
(Super User DO)

Question 2

It is used to install, update, upgrade and remove any package. apt get basically works on a database of available packages.

Answer 2

apt-get

Question 3

This command updates the database and let your system know if there are newer packages available or not.

Answer 3

apt-get update

super user privileges is the first command you need to run in any Linux system after a fresh install.

Question 4

After updating the package database, next step is to to upgrade the installed packages.

Answer 4

apt-get upgrade

sudo apt-get upgrade < package-name >

Question 5

installs a desired package
(If you know the name of the package, then you can easily install a program using this command)

Answer 5

apt-get install

sudo apt-get install < package-name >

Question 6

removes the installed program.
-only removes the software from your system but not the configuration or data files of the package.

Answer 6

apt-get remove

Question 7

is used when you want to remove a software completely from your system with its configuration or data files so that no longer personalized settings will be available during
reinstallation.

Answer 7

apt-get purge

sudo apt-get purge < package-name >

Question 8

command is used to remove any unnecessary packages
- will remove those dependencies that were installed with applications and that are no longer used by anything
else on the system.

Answer 8

apt-get autoremove

Question 9

lists all files and folders in your current working directory. You can also specify paths to other directories if you want to view their contents.

Answer 9

ls(list)

ls Documents

Question 10

• also known as chdir used to change the current working directory.

Answer 10

cd(change director)

Question 11

Takes you to the root directory

Answer 11

cd /

Question 12

Takes you up one directory level

Answer 12

cd ..

Question 13

Takes you to the previous directory

Answer 13

cd -

Question 14

displays the full pathname of the current working directory.

Answer 14

pwd(print working directory)

Question 15

allows you to copy a file.
You should specify both the file you want to be copied and the location you want it copied to

Answer 15

cp(copy)

Question 16

allows you to move files.
You can also rename
files by moving them to the directory they are currently in, but under a new name.

Answer 16

mv(move)

Question 17

removes the specified file

Answer 17

rmdir(remove directory)

Question 18

allows you to create a new
directory. You can specify where you want the directory created,-if you do not do so, it will be created in your current working directory.

Answer 18

mkdir(make directory)

Question 19

This is a pager which is useful to view long files for instance:

Answer 19

less