Karteikarten
Chapter 1 Flashcards
Karten in diesem Stapel (38)
- 1Open Source Softwareenables users to access its source code and gives them the right to modify it.
- 2GUI (Graphical User Interface)a collection of icons, windows, and other screen graphical
elements that help users interact with the operating system. - 3CLI (Command Line Interface)a text-based interface for the operating system, where a user
typically enters commands at the command prompt to instruct the computer to perform a specific task. - 4shella component that interacts directly with users. It also functions as the command interpreter
for the Linux system. The shell accepts user commands and ensures that the kernel carries them out. - 5Four most common shells used in LinuxBash
Bourne
C Shell
Korn - 6echocommand enables you to determine the shell that is established at the login.
- 7moreallows you to view one page at a time; is used in front of the file that you want to open (pg 12)
- 8headdisplays the first 10 lines of each file (pg 12)
- 9taildisplays the last 10 lines of each file (pg 12)
- 10argumentusually a file name or directory name that
indicates the files on which the command will operate. (pg13) - 11Up Arrow/Down Arrowaccess previously entered commands that
are stored in the History file (pg 13) - 12datedisplays the current date and time set on a system
- 13caldisplays the calender for any month or year
- 14terminal or consolea computer interface for text entry and display, where information is displayed
as an array of preselected characters. - 15uptimedisplays the time from when a system started running; gives info about the current time, how long a system is running, and how many users are currently logged in
- 16whoused to determine the details of users currently logged into a system; provides the username, name of the system from which the user is connected, and the time since the user is connected
- 17whoamiused to display the user name with which you are currently logged in to the system
- 18hostnameused to display the hostname of the system you are currently logged in to
- 19wprimarily used to display the details of users who are currently logged in to a system and their transactions
- 20lastdisplays the history of user log in and out, along with the actual time and date
- 21wallsends a message to all currently logged in users
- 22echoused to display a line of text on the terminal
- 23sleepused to pause system activities for a specified time
- 24catdisplays, combines, and creates test files; frequently used to read small text files
(pg 26) - 25whichused to verify whether a user has the right to execute a command
- 26manual pages/man pagescontain the complete documentation that is specific to every
Linux command; they are presented in simple ASCII text format. - 27mandisplays the man page for a specific command (pg 31)
- 28aproposgenerally used when a user does not know which command to use to perform a certain action (pg 32)
- 29whatisDisplays a short description of the command along with the man
pages/sections matching the exact command. - 30infoDisplays info pages containing additional or recent information
about a command. - 31serviceallows you manage services running on your computer
- 32intthe first process run on boot, and is responsible for managing the runlevel of your system.
- 33runlevelspecifies the group of processes that are started, stopped, and otherwise managed on Linux systems.
- 34systmda replacement for SysVinit and Upstart in some Linux distributions, including CentOS/RHEL 7.
- 35Upstart (Upstart int system)event-based rather than runlevel-based.
Event-based means that jobs will be automatically started and stopped by changes to the system’s state. - 36How many boot loaders can be used on a system?1
- 37boot loadera program that loads the kernel so that Linux and other operating systems can boot
- 38shutdownused to close a system
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- Karteikarten am Chapter 1 Flashcards, erstellt von Gabby Burgos am 24/02/2016.
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