Everything about the linux
openssl enc -e -aes256 -k '<passphrase>' -in <decrypted_file.txt> -out <encrypted_file.txt>
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-> https://www.debian.org/CD/faq/#write-usb
After a booting Debian from usb please check what You have on Your computer:
blkidNext you can use linux to wipe data from hard disk:
dd if=/dev/urandom of=/dev/sdX bs=1M; sync where X is drive in linux system ie /dev/sda
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Whats new in Debian 11?
-> https://www.debian.org/releases/bullseye/amd64/release-notes/ch-whats-new.en.html
For the security reasons please backup before procedding with upgrade.
Make sure You have upgraded your debian distribution to the latest old-stable release. Run following commands from the console:
sudo apt-get update
sudo apt-get upgrade
If you are up-to-date with Debian 10 distribution you can proced to the next chapter:
Upgrade to Debian 11:
First edit with your favorite editor the /etc/apt/sources.list file. You can change the file also with sed command:
sed -i 's/buster\/updates/bullseye-security/g;s/buster/bullseye/g' /etc/apt/sources.list
After that you are able to upgrade to the Debian 11 system by running following commands:
apt-get update
apt-get upgrade
apt-get dist-upgrade
Next we must reboot into new system 🙂
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Linux system offers in command line mode a full set of commands for users and also for administrators.
I will present some of this in this post.
man command_name
Where command name is any Linux command we are interested in using.
The man command displays a manual that lists the syntax and an overview of all the options for the command given as an argument. In the case of administration commands or system services, it also gives any file names that contain definitions of the default behavior of these commands.
The work with the manual is finished after pressing the q key.
example:
man cd
cd command is used for changing the current directory.
The paths in a Linux system can be specified in relative or absolute terms.
example:
cd ../
In a bash shell, you can use the tab key to complete a directory name.
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