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Part $1$: Linux Command$-$Line

The goal of this part is to have you learn and practice various Linux commands. Note that you may use these commands at differ points in each term. Specifically, after this assignment you will be able to use the following commands:

man $-k$

echo

pwd

cat $[>]$

cd

Is

touch

mkdir

ps aux $[|]$

mv

$cp$

sudo

$rm[-R]$

chmod

chown

An easy way to determine what a command does is to type man and then the name of the command you are trying to learn about. For instance, man $cp$ in the command line interface $($CLI$)$ will bring up a page about the cp command. Simply press $q$ to leave that screen.

$-16.1\mathrm{.}3$ File Permissions

List all of the files $($including hidden ones$)$ in the your$\_$first$\_$name directory with permission details.

Remove all permissions for the others group on your$\_$last$\_$name.txt$.$

Change the owner of your$\_$middle$\_$name.txt to root $($You will need to type in your password$).$

$17-1\mathrm{.}4$ File Manipulation

Add the string 'hello' to your$\_$last$\_$name.txt$.$

Hint: You can direct the output of any command to a file using the $>($redirection$)$ operator. The $$ redirection operator will concatenate the output to the end of the file. Combining that with the echo command you can create a text file or update its contents like this: echo Accio Firebolt $>$ harry.txt$.$

Add the contents of your$\_$last$\_$name.txt to your$\_$last$\_$name$3.$txt $($in the subdir directory$).$ Hint: The cat command will print the contents of a file. Consider combining that with a redirection operator.

Print the contents of your$\_$last$\_$name.txt to the console.