By Byrd J.

This educational contains fourteen sections, every one of which addresses a primary element of UNIX computing. It concentrates on illustrating the principal options via delivering brief causes, besides examples, and routines.

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All can be removed/altered *except* 'printers. # Feel free to create your own custom commands. # The command 'printers' is necessary for the proper functioning of the cwis # printer-choosing utility. The 'printers' program changes the line that # sets default printer queue in this file, and this file gets "run" again # to load the new value into the user environment. # The command 'more' is altered to call the more capable 'less' pager. Disable # this alias if you want to use the 'more' pager. # The command 'ls' is set up to identify executable # files with an * and directories with a /.

When you finish editing the command line, press the return key to issue the command to the shell. " Section 14: The Unix File System Most Unix machines store their files on magnetic disk drives. A disk drive is a device that can store information by making electrical imprints on a magnetic surface. One or more heads skim close to the spinning magnetic plate, and can detect, or change, the magnetic state of a given spot on the disk. The drives use disk controllers to position the head at the correct place at the correct time to read from, or write to, the magnetic surface of the plate.

To view all the environment variables, use the command printenv You can also view a particular environment variable using the echo command: echo $TERM The above command echos the value of the TERM environment variable to the standard output. The creation of the execution environment When you log in, a sequence of events establishes the execution environment. The exact sequence of events depends on the particular flavor of Unix, and also depends upon the default shell for your account. The following is a description of the login process for the HP-UX operating system.

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A Basic UNIX Tutorial by Byrd J.

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