Commands

Question 1

echo

Answer 1

Output text on the terminal.

Question 2

ls

Answer 2

List the contents of a directory.

Question 3

type

Answer 3

Show how a specific command is executed.

Question 4

touch

Answer 4

Create an empty file or update an existing file’s modification date.

Question 5

hostname

Answer 5

Show or change a system’s hostname.

Question 6

rm

Answer 6

• Remove files

Question 7

rmdir

Answer 7

Used remove empty directories from the filesystem in Linux. The rmdir command removes each and every directory specified in the command line only if these directories are empty. So if the specified directory has some directories or files in it then this cannot be removed by rmdir command.

Question 8

whereis

Answer 8

Locates source/binary and manuals sections for specified files.

Question 9

head

Answer 9

Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name.

Question 10

tail

Answer 10

Print the last 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name.

Question 11

sort

Answer 11

The sort command arranges text lines in useful ways.

sort [options]