Term
|
Definition
shows the system calendar
-j = Julian date format
-s = Sunday is first day
-m = Monday is first day
-y = shows all months of current year |
|
|
Term
|
Definition
displays multiple files
-n = displays line numbers |
|
|
Term
|
Definition
|
|
Term
|
Definition
| exits UNIX/Linux when GUI is not used |
|
|
Term
|
Definition
displays the first few lines of an item
-n = displays the first n lines of a file |
|
|
Term
|
Definition
| displays a long file on one screen at a time, you can scroll up or down |
|
|
Term
|
Definition
displays the online manual for the specified command
-d = prints information for debugging
-f = gives short desc. (same as whatis)
-k = finds a certain string by searching through all of the man information |
|
|
Term
|
Definition
| displays a long file one screen at a time, you can scroll down. |
|
|
Term
|
Definition
|
|
Term
|
Definition
displays the last few lines of a file
-n = displays last n lines of file |
|
|
Term
|
Definition
| displays a brief description of a command |
|
|
Term
|
Definition
allows you to see who is logged in
-H = displays column headings
-u = displays session idle times
-q = displays a quick list of users
-b = verifies when the system was last booted |
|
|
Term
|
Definition
| text that provides UNIX/Linux with additional information for executing a command. On the command line, and argument name follows an option name, and a space separates the two. Examples: file and directory names |
|
|
Term
|
Definition
| the process of verifying that a user is authorized to access a particular computer, server, network or network resource, such as telnet or ftp. |
|
|
Term
|
Definition
| a UNIX/Linux command interpreter, and the default Linux shell. Incorporates best features of Bourne and Korn shell. "Bourne again Shell" |
|
|
Term
| Berkeley Software Distribution (BSD) |
|
Definition
| a distribution of UNIX developed through the University of California at Berkeley, which first distributed the BSD UNIX version in 1975. |
|
|
Term
|
Definition
| the first UNIX/Linux command interpreter, developed at AT&T Bell labs by Stephen Bourne. |
|
|
Term
|
Definition
| A UNIX/Linux command interpreter designed for C programmers |
|
|
Term
|
Definition
| A property that distinguishes uppercase letters from lowercase letters. UNIX is case sensitive. |
|
|
Term
|
Definition
| a computer on a network running programs or accessing files from a mainframe network server, or host computer. |
|
|
Term
|
Definition
| text typed after the command-line prompt which requests that the computer take a specific action. |
|
|
Term
|
Definition
| onscreen location for typing commands |
|
|
Term
|
Definition
| a name that identifies a grouping of computer resources on a network. Internet-based domain names consist of three parts; a top-level domain (such as a country of organization type), a subdomain name (such as a business or college name), and a host name (such as the name of a host computer). |
|
|
Term
| File Transfer Protocal (FTP) |
|
Definition
| an internet protocol for sending and receiving files. |
|
|
Term
| graphical user interface (GUI) |
|
Definition
| software that transforms bitmaps into an infinite variety of images, so that when you use an operating system you see the graphical images |
|
|
Term
|
Definition
|
|
Term
| internet protocol (IP) address |
|
Definition
| a set of four numbers (for the commonly used IP version 4) separated by periods-for example, 172.16.1.61- and used to identify and access remote computers on a network or over the internet. |
|
|
Term
|
Definition
| the basic operating syste, which interacts directly with the hardware and services user programs |
|
|
Term
|
Definition
| a means of accessing the kernel. It's use is limited to the administrator to prevent unauthorized actions from interfering with the hardware that supports the entire UNIX/Linux structure. |
|
|
Term
|
Definition
| a UNIX/Linux command interpreter that offers more features than the original Bourne shell. Developed by David Korn at AT&T Bell Labortories |
|
|
Term
|
Definition
| a process that protects privacy and safeguards a multiuser system by requiring each user to type a user name and password before using the system. |
|
|
Term
|
Definition
| a large computer that has historically offered extensive processing, mass storage, and client access for industrial-strength computing. Mainframes are still in use today, but many have been replaced by PC-type computers that are designed as servers with powerful processing and disk storage capabilities. |
|
|
Term
|
Definition
| the online manual pages for UNIX/Linux commands and programs that can be accessed by entering man plus the name of the command or program. |
|
|
Term
|
Definition
| an operating system that enables a computer to run two or more programs at the same time. |
|
|
Term
|
Definition
| a system in which many people can simultaneously access and share a server computer's resources. To protect privacy and safeguard the system, each user must log in. |
|
|
Term
|
Definition
| a group of computers connected by network cable or wireless communications to allow many users to share computer resources and files. |
|
|
Term
|
Definition
| the most fundamental computer program. It controls all the computer's resources and provides the base upon which application programs can be used and written. |
|
|
Term
|
Definition
| the additional capabilities you can use with a UNIX/Linux command |
|
|
Term
|
Definition
| any person who uses the system, except the system administrator or superuser. |
|
|
Term
| output redirection operator |
|
Definition
| the greater-than sign > is one example of a redirection operator. Typing > after a command that produces output creates a new file or overwrites an existing file and then sends output to a disk file, rather than a monitor. |
|
|
Term
|
Definition
| a networking configuration in which each computer system on the network is both a client and server. They do not depend on a central server, still operational if one computer fails. |
|
|
Term
|
Definition
| a single stand alone machine such as a desktop of laptop computer that performs all input, output, process and and storage operations. |
|
|
Term
|
Definition
| a characteristic of an OS that allows the system to be used in different environments, and on different types of computers. UNIX/Linux are portable OS |
|
|
Term
| Portable Operating System Interface for UNIX (POSIX) |
|
Definition
| Standards developed by experts from industry, academia, and government through the Institute of Electrical and Electronics Engineers (IEEE) for the portability of applications, incuding the standardization of UNIX features. |
|
|
Term
|
Definition
| the system administrator's unique user name; a reference to the system administrator's ownership of the root account and unlimited system privileges. Also, the root has two other meanings: 1 the basis of the treelike structure of the UNIX/Linux file system and the name of the file (root directory) located at this level and 2 the home directory for the root account. |
|
|
Term
|
Definition
| a form of authentication developed for UNIX/Linux systems to provide authentication security for TCP/IP applications, including FTP and Telnet |
|
|
Term
|
Definition
| the computer that has a network operating system and, as a result, can accept and respond to requests from the user programs running on other computers (called clients) on the network. |
|
|
Term
|
Definition
| a centralized approach to networking, in which client computer's data and programs reside on the server. |
|
|
Term
|
Definition
| an interface between the user and the OS |
|
|
Term
|
Definition
|
|
Term
|
Definition
| a version of UNIX originating from attandt bell labs and first released as system 3 in the early 80's as a commercial version of UNIX. |
|
|
Term
|
Definition
| a command's format, wording , options and arguments |
|
|
Term
|
Definition
| an internet terminal emulation program |
|
|
Term
|
Definition
| a device that connects to a server or host, but consists only of a monitor and keyboard and has no CPU. Sometimes called a dumb terminal |
|
|
Term
|
Definition
| a special window that is opened from a UNIX/Linux GUI desktop that enables you to enter commands using a shell. |
|
|
Term
|
Definition
| a means of accessing the areas of a system where program software resides. |
|
|
