UBUNTU BASIC COMMANDS 2

Question 1

This command writes its arguments to standard output.

Answer 1

echo

Question 2

It lists, combines, and writes file content to the standard output.

Answer 2

cat(Concatenate)

Question 3

is used to search for a particular string/ word in a text file.

Answer 3

grep

grep < flag or element _ to _ search > {filename}

Question 4

is used to delete files within a directory.

Answer 4

rm

can delete multiple files
rm filename1 filename2 filename3

Question 5

compress your files into a ZIP file, a universal format commonly used on Linux.
It can automatically choose the best compression ratio.

Answer 5

zip and unzip

Question 6

lists the commands you have previously issued
on the command line.

Answer 6

history

You can repeat any of the commands from your history by typing an
exclamation point ! and the number of the command from the history
list.

Question 7

clears the complete history list

Answer 7

history -c

Question 8

gives you a summary of the memory usage with your computer. It does this for both the main Random Access Memory (RAM) and swap memory.

Answer 8

free

Question 9

is used to provide human friendly numbers
and units. Without this option, the figures are presented in bytes

Answer 9

-h(human)
free -h

Question 10

will close a terminal window, end the execution of a shell script, or log you out of an SSH remote access session.

Answer 10

exit