Introduction to the Command Line (Second Edition): The Fat by Nicholas Marsh

By Nicholas Marsh

Advent to the Command Line is a visible advisor that teaches crucial Unix and Linux shell instructions in an easy and uncomplicated demeanour. Command line courses coated during this ebook are established with usual utilization to help within the studying method and assist you grasp the command line speedy and simply. Covers renowned Unix, Linux, and BSD structures.

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Additional info for Introduction to the Command Line (Second Edition): The Fat Free Guide to Unix and Linux Commands

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Deny Displaying multiple matches using file name completion Tip In addition to command line completion, some shells offer the ability to recall previously executed commands by using the Up Arrow key on the keyboard. Wildcards Wildcards are used to pattern match one against one or more text elements. They are helpful on the command line for performing bulk tasks such as listing or removing groups of files. The table below lists the different types of wildcards that can be used on the command line.

Auto-completion also works on file paths. Typing ls -l /etc/en and pressing the Tab key would auto-complete to the file /etc/environment as shown in the next example. $ ls -l /etc/en $ ls -l /etc/environment Command line completion of file names When more than one match is found, the shell will display all matching results. In the next example, typing ls -l /etc/host and pressing Tab displays all matching files in the /etc directory. deny Displaying multiple matches using file name completion Tip In addition to command line completion, some shells offer the ability to recall previously executed commands by using the Up Arrow key on the keyboard.

While clearing the screen after each command isn't necessary, it does make it easier to read the information on the display. Tip CTRL + L is a keyboard shortcut to clear the screen in the Bash shell. See Appendix A for more information about Bash shortcut keys. Common usage examples: clear Clear the contents of the screen logout Purpose: Log out of the system. 04 login: Results of the logout command The logout command logs your account out of the system. This will end your terminal session and return to the login screen.

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