Perform this lab only if you have fully performed the earlier lab $($part $1)$: Server authentication using SSH keys PART $1$

Multi$-$server backups. Write a program $($in bash, $.$sh$)$ that does the following:

create a script named $\text{'}$

backupNode.sh$\text{'}-$ a plain text file $($use the nano editor$)$

the program should read from an external text configuration file called 'backupNode.conf' a list of directories that should be backed up $($each directory on a separate line$)$

The script should perform a backup of the directories indicated in the configuration file using the packaging tool $($tar $+$ ziping$)$ in such a way that the resulting archive file, which will contain all directories indicated in the configuration file, will have a name consisting of the name of the server from which the backup comes from and the date and time the backup was created $($i$.$e$.$ the resulting file will be named: wenus$\_2022\_03\_01\_10\_00.$tgz$,$ the host name can be called with the command: hostname$)$

After the backup is done, the script will send the resulting file to the backup server $($using the secure ssh protocol$).$ The script will not stop when prompted for a password if keys with an empty password are matched between servers. For this purpose:

On the backup server create user: "forbackups"

for this user $($forbackups$)$ generate a pair of ssh keys $($pub and priv$)$

Pass the pub key to the 'authorized$\_$keys' container of the server on which the backup will be stored

Copying to the account of a specific user $($and ssh connections$)$ is carried out using the command with an indication, e$.$g$.$

Scp file.tgz

forbackups@$172\mathrm{.}16\mathrm{.}0\mathrm{.}5$:

$($the colon after the IP address is valid, without it$,$ scp copying will not be possible$)$