What's my purpose?
The user database (file) with fields giving the username, real name, home directory, encrypted password and other information about each user.
What is /etc/passwd?
This is the command that shows the content of files without needing to open them for editing.
What is the cat command?
This command will give a long list of permissions, ownership, and creation data for all files in the directory that you are in.
What is ll -a?
This is a command, and a service, that allows for secure logins to a remote machine via the terminal.
What is ssh?
Unlike Microsoft, Linux is considered to be this, giving users the ability to see, contribute, and use the source code.
What is open-source?
File to change your default settings for ssh, such as changing the ssh port from 22.
What is /etc/ssh/sshd_config?
This command is used to simultaneously create a new directory and a new subdirectory beneath it.
What is mkdir -p?
This command allows for the changing of permissions of a file.
What is chmod?
This is the default package manager for Red Hat software.
What is RPM?
What is the kernel?
This file stores the hashed passphrase (or “hash”) for a Linux user's account with additional properties related to the user's password.
What is /etc/shadow?
This command will enable you to rename a file.
What is mv?
This command allows a file's or directory's owner and/or group to be changed.
What is chown?
Enables the user to manage Linux services on the machine, including starting and disabling the service.
What systemctl?
This mascot represents the popular open-source operating system, known for its stability and security
What is a penguin?
To grant a user or group sudo privileges, a file needs to be created under this directory.
What is /etc/sudoers.d?
This command locates files by searching in real time in the file-system hierarchy.
What is the find command?
This command, with options, sets read, write and execute for the file's owner, read and write for the file's group, and execute for the file's other permission. (octal format)
What is chmod 761?
This command will terminate a process with a PID of 3242 using the fatal termination signal.
What is kill -9 3242?
Linux is this type of operating system that is designed to easily replace or remove components such as software.
What is modular?
This file holds the public key information of servers for remote connection via SSH.
What content is in .ssh/known_hosts or /etc/ssh/ssh_known_hosts
This will re-execute, with elevated privileges, the last command that was ran successfully.
What is sudo !!
This can overwrite the default Linux file and directory permission settings of 666 and 777 respectively.
What is umask?
Name and PID of first process started on a Linux system.
What is systemd, PID 0?
In 1991, this Finnish computer science student unleashed the first version of the Linux kernel, forever changing the landscape of operating systems.
Who is Linus Torvalds?