Unix systems are characterized by a modular design that is sometimes called the, what?
Unix Philosophy
The Unix operating system should provide a set of simple tools known as, what?
coreutils
What is the name of the GNU kernel?
Unix/BSD
The POSIX shell is the same as which shell?
Bourne Shell
What is the default shell on GNU/Linux?
Bash
True or False: The CLI, terminal, and shell are just different names for the same thing.
False
What is the root of the filesystem?
/
What is the name of the user that lives in kernel land?
root
What is the home directory of the root user?
/root
What is the administrator on a Linux system?
Super User (SUDO)
What is a device driver?
Driver that communicates between applications and hardware
What are the two types of device drivers?
User mode and Kernel Mode
Where are log files kept?
/var/log
Where are system configuration files located?
/etc
The /usr/bin directory contains required binaries.
True
What is the ~ short for?
The users home directory
What is a single dot short for?
Current working directory
Where does the absolute path for a file or directory start?
/
What is the fundamental interface between an application and the Linux kernel?
system call interface
What is the command to pull up system calls by number on a Linux machine?
ausyscall
What is the name of the C library on GNU/Linux called?
glibc
What is the file type for executable files in Unix/Linux?
elf
What does the mmap system call do?
memory map
True or False: A reboot is required when one installs a LKM?
False
What is the command to list loaded kernel modules?
lsmod
What does the .ko file extension stand for?
kernel object
What are some of the common arguments used with the ps command?
-l (list)
What is a type of process that runs in the background without any human interaction?
Daemon
What are the three types of login shells?
Login, Interactive, Non-Interactive
What shell actively reads commands from user input?
interactive
What argument is used with the "su" command to open a BASH login?
-
What argument opens a BASH login with the "bash" command?
-l
What is the restricted BASH shell called?
rBash
What command is used to print environmental variables?
printenv
What environmental variable is checked when we execute a command in the shell?
$PATH
Name one file transfer protocol based on SSH.
SFTP
What is an administrator account?
Super User (SUDO)
What type of account do users like Apache have?
service account
What of accounts belong to users like sys or a daemon?
system account
What file contains user information?
/etc/passwd
Where are user password hashes stored?
/etc/shadow
Where are local user configurations stored?
.bashrc
What restricts the rights and access of a user to the minimal amount required to perform their role?
principal of least privilege
What element of user management says administrators of a system should not share accounts?
individual accounts
What command is used to check network connectivity?
ping
What command is used to display the routing table?
route
What information do you need to configure an IP address?
IP Address, Gateway Address, Network Mask
What are three command line tools used to interact with Networkd?
networkctl, nmtui, nmcli
The d after a process name ie Networkd stands for what?
daemon
Samba’s functionality comes from what two protocols?
SMB, CIFS
What does Samba do?
provide file and print sharing between different Operating Systems.
Samba security modes are set in which file?
smb.conf
What are the two security modes in Samba?
Share-Level, User-Level
The majority of Apache servers run on what system?
Linux
Where is the index.html file located?
/var/www/html
What are the symbols used to denote request and response headers?
request: >
response: <