Category: Unix

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LINUX/UNIX Commands tutorial/reference

Linux is a UNIX-like operating system. It is one of the most prominent open source software. This free online tutorial will help you to learn basics of linux cmd.

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UNIX Tutorial – Introduction

UNIX is an operating system which was first developed in the 1960s, and has been under constant development ever since. By operating system, we mean the suite of programs which make the computer work

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UNIX Tutorial One

When you first login, your current working directory is your home directory. Your home directory has the same name as your user-name, for example, ee91ab, and it is where your personal files and subd

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UNIX Tutorial Two

cp file1 file2 is the command which makes a copy of file1 in the current working directory and calls it file2

What we are going to do now, is to take a file stored in an open access area of the fi

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UNIX Tutorial Three

Most processes initiated by UNIX commands write to the standard output (that is, they write to the terminal screen), and many take their input from the standard input (that is, they read it from the

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UNIX Tutorial Four

The character * is called a wildcard, and will match against none or more character(s) in a file (or directory) name. For example, in your unixstuff directory, type

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UNIX Tutorial Five

Each file (and directory) has associated access rights, which may be found by typing ls -l. Also, ls -lg gives additional information as to which group owns the file (beng95 in the following example)

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UNIX Tutorial Six

All students are allocated a certain amount of disk space on the file system for their personal files, usually about 100Mb. If you go over your quota, you are given 7 days to remove excess files.

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UNIX Tutorial Seven

We have many public domain and commercial software packages installed on our systems, which are available to all users. However, students are allowed to download and install small software packages i

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UNIX Tutorial Eight

Variables are a way of passing information from the shell to programs when you run them. Programs look “in the environment” for particular variables and if they are found will use the values stored

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