Brief introduction to the UNIX operating systeem

Brief introduction to the UNIX operating system

The UNIX operating system

DICT-servers available to our users use the UNIX operating system. UNIX is a multi-user operating system. This means that multiple users can use the system at the same time. Concretely, this means that, for instance, dozens of users can log in from a certain location on the same server. When logging in, you need to identify by means of your login and password - an evident consequence of the multi-user nature of UNIX. login: your_loginname passwd: your_password

After your login, you're positioned in your personal home directory. This consists of the different groups of users you belong to, followed by your loginname. /root/usersgroup/login$ for instance /staff/arc/fdgroot$

After the prompt (a $-sign) commands can be given in.

Keep in mind, the UNIX operating system is case-sensitive, in other words, a difference is made between upper- and lower case. Always count this in when entering commands.

The organisation of information

The information your home directory contains is built hierarchically. Files and directories belong to this hierarchy. A file created by you (this can contain text, data for an application, an apllication...) is placed in a directory of your choice. Under your home directory you can find several subdirectories and files. These subdirectories at their turn contain other subdirectories and files. In this way, a pyramedic structure arises. Below, it is briefly explained which commands can be used to navigate through this structure.

A few common commands