Description
Objective :
Lab 1 is intended to provide an introduction to Linux. The objective of this lab is to make students familiar with the Linux command-line environment and develop the skills of shell scripting. This lab serves as a platform for the subsequent labs related to system calls, process management, file management, and memory management.
Tutorial
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Tutorial 1: Log in to the system(credentials in the board), open the Terminal and type the following on the login prompt :
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echo hello world
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The wordhello worldwould get displayed as an output on the terminal. The echocommand displays a line of text, type man echoto read what an echo command does.
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Linux provides on-line manuals for different commands through an interface called man.
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To know about man type the following on the terminal: man manand read the description that is displayed.
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For all commands, we will use the syntax
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man <command name>
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Type echo $SHELL
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This prints /bin/bash
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bash is the name of the login shell that is currently in use
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Study the following Unix/Linux general-purpose utility commands using their man pages and execute them on the terminal :
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man, who, cat, cd, cp, ps, ls, mv, rm, mkdir, rmdir, echo, date, time, kill, chmod, chown, pwd, cal
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Tutorial 2: Study the following Linux commands: sed, grep and awk
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Use the grep command to find how many lines of a word in the given word. The filename and the word are provided as inputs.
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Tutorial 3: Shell scripting
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Write a shell script to display “HELLO WORLD” on the terminal :
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Open an editor
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Type echo HELLO WORLD
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save the file with .sh extension ( say test.sh)
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close the editor
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At the terminal, type sh test.sh
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Expected output at the prompt: HELLO WORLD
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References:
http://profile.iiita.ac.in/bibhas.ghoshal/lab_files/abs-guide.pdf http://profile.iiita.ac.in/bibhas.ghoshal/lab_files/Tutorial_shell_scripting
