Basic Bash Commands

Question 1

ls -a

Answer 1

hidden files

Question 2

ls -l

Answer 2

outputs in long form

Question 3

ls

Answer 3

lists contents of current directory

Question 4

ls /var/log

Answer 4

lists contents of specified directory

Question 5

touch

Answer 5

creates a new file or updates timestamp on existing file

Question 6

shutdown system with no time delay

Answer 6

shutdown -h

Question 7

shutdown system in 90 seconds

Answer 7

shutdown -h -t 90

Question 8

reboot system with no time delay (without reboot command)

Answer 8

shutdown -r

Question 9

su command, meaning

Answer 9

substitute user

Question 10

log in as root

Answer 10

su - root

Question 11

Searches the name section of all man pages for a keyword the user provides. Helps you describe a command then search man pages to find a command that does what you want

Answer 11

apropos

Question 12

Displays a brief description of a command, telling you what it does

Answer 12

whatis

Question 13

Alternative to man pages - favored by man project but not as widely adopted as man

Answer 13

info

Question 14

Displays a quick summary of the usage of a command and a list of arguments that can be used

Answer 14

–help

Question 15

This directory contains documentation for libraries, system utilities and other software packages installed on the system. Each package has its own subfolder and each subfolder usually contains seperate documents that list the authors, licensing information, installation instructions, generate README, etc

Answer 15

/usr/share/doc/