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Chapter 21
Ch 21 vocab
| Term | Definition |
|---|---|
| apt-get | A Linux command to install and remove software packages and install OS updates. |
| Bash shell | The default shell used by the terminal for many distributions of Linux. |
| basic loop | A scripting or programming technique to execute the same group of commands multiple times until a condition is met. |
| batch file | A text file containing a series of OS commands. Autoexec.bat is an example. |
| cat | A Linux command to view the contents of a file. |
| chmod | A Linux command to change modes (or permissions) for a file or directory. |
| chown | A Linux command to change the owner of a file or directory. |
| cmdlet | A prebuilt script written for Windows PowerShell, a command-line interface. |
| comment syntax | The text in a script or program that tags a line as documentation, so it is not interpreted as a command in the script or program. |
| cp | A Linux command to copy a file |
| df | A Linux command to Show the amount of disk free space available in Linux and to understand the file systems that are attached, or mounted, to the system. |
| dig | A Linux command to look up DNS information. |
| dynamic type checking | A technique in scripting and programming whereby each command line is checked by the command interpreter software to verify that the command can be executed. |
| environmental variable | Data the OS makes available to a script or program for use during its execution. For example, the TEMP variable tells a script where it can store its temporary files. Also called a system variable. |
| find | A Linux command that is used to “walk” through the file hierarchy to find files and directories. |
| grep | A Linux command to search for and display a specific pattern of characters in a file or multiple files. |
| GRUB (GR and Unified Bootloader) | The current Linux boot loader, which can handle dual boots with another OS installed on the system. |
| ip | A Linux command to display IP addresses and property information of the various network interfaces on the system |
| JavaScript | A scripting language normally used to create scripts for webpages; the scripts are embedded in an HTML file to build an interactive webpage in a browser. |
| Live USB | In Linux, a USB flash drive that runs a live version of a Linux. The operating system does not need to be installed on the hard drive. |
| ls | A Linux command to display a list of directories and files (similar to the Windows dir command). |
| man | A Linux command to display the online help manual, called man pages. |
| mv | A Linux command to move a file or rename it, if the source and destination are the same directory. |
| nano | A Linux command to launch a full-screen editor that can be used to edit a file. |
| package | A collection of files needed to install software. |
| PowerShell ISE | An environment used to create, edit, and test PowerShell scripts. |
| PowerShell script | A text file of PowerShell commands that can be executed as a batch. |
| Ps | A Linux command to display the process table so you can identify process IDs for currently running processes. |
| pwd | A Linux command to show the name of the current or present working directory. |
| Python script | A text file of commands that use the Python scripting language and that can be executed as a batch. |
| rm | A Linux command to remove or delete the file or files that are specified. |
| root account | In Linux, the account that gives the user access to all the functions of the OS; the principal user account. |
| run-time environment | The environment provided by the operating system in which commands contained in a script file are interpreted and executed. |
| Samba | A Linux file server that allows for file sharing across different operating systems within a network. |
| shell script | A text file of Linux commands that can be executed as a batch. |
| string | In scripting and programming, a type of data that can contain any character but cannot be used for calculations. |
| su (substitute user or switch user) | A Linux and macOS command to open a new terminal shell for a different user account. |
| sudo | A Linux and macOS command to execute another command as a superuser when logged in as a normal user with an account that has the right to use root commands. |
| superuser | A user who is logged in to the root account. |
| swap partition | A partition on a Linux hard drive used to hold virtual memory. |
| Telnet | A terminal emulation protocol that allows users at one site to simulate a session on a remote host. It uses port 23. |
| top | A Linux command to display the Linux processes. |
| VBScript | A scripting language that creates scripts modeled after the more complex Visual Basic programming language. These kinds of scripts have a .vbs file extension. |
| yum (Yellowdog Update Manager) | A Linux command to get, install, delete, and manage software packages in RPM (Red Hat Package Manager). |
Created by:
CarlyJo87