UNIX_Practice_Session - Chapter Practice Session 3.1...

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3.1 PRACTICE SESSION – I: BASIC UNIX COMMANDS Learning Objectives and Scope The primary objective of this assignment is to introduce you to basic UNIX commands. The commands and utilities you will use are most common on any UNIX systems. At the end of these exercises you will be able to ä manipulate files change permissions count the number of lines, words, characters create, delete, append, concatenate, display, move extract lines paginate, format the output search for text strings within files sort ä manipulate directories create, delete display contents ä change your password ä use basic commands display a list of users display messages and news display the shell environment variables obtain help on command usage run programs in the background time commands The approach is interactive in nature so that the student can actively participate in the learning proc- ess while running through the contents. The purpose here is to let you perform standard operations on Chapter Practice Session
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Practice Session 23 directories and files and to run common UNIX utilities. It will guide you to type a certain command or perform a task during the sessions. We advise you to go through this section while sitting at a terminal, with access to UNIX system, and with a username and password allocated to you by the system admin- istrator in your institution. Logging in to the UNIX Server Follow the appropriate instructions for your system to access the UNIX server. UNIX should normally display the following message to start this interactive session Login: Please take care of the following while seeking the access to the system. UNIX systems are case sensi- tive; upper and lower case characters are treated as different. All UNIX type systems generally use lowercase characters. All commands should be typed in lowercase characters. All users on a UNIX system are assigned their own usernames. When they logon to the system, they are placed in a HOME directory, which is a portion of the disk space reserved just for them. 1.0 Type your allocated username. UNIX asks for your password. 1.1 Type your allocated password. Note that the password is not displayed on the screen as you enter it. An example is shown below with username “harshini” Login: harshini Password: The system checks the username and password you typed. If the username and password typed by you are correct, it will log you in. It does this by running a shell program for you. The shell program is your interface to the system. Once you have successfully logged in, you can proceed to the next section. If you cannot login, please ask your system administrator for help and guidance to access what is denied for you.
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This note was uploaded on 05/14/2010 for the course CS SS ZG653 taught by Professor Shanta during the Spring '09 term at Birla Institute of Technology & Science.

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UNIX_Practice_Session - Chapter Practice Session 3.1...

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