Unix Manual Pages

A History of Unix

Unix in Summary

An introductory tutorial on Unix...

Selecting a Shell

Regular Expressions...

Perl and Unix...

Help with vi...

Shell scripting...

The 10 Unix commands every beginner needs to know...

The 10 most misunderstood commands...

The 62 Core Commands

Commands by Category

Alphabetic list of commands...

Copyright/Copyleft info...

cd

Change Directory

cd Change to Home Directory (eg. /usr/bin/~mschmeckle/)

cd ~ Change to Home Directory

Change Directories using Relative Paths

cd .. Move up one level in directory tree (eg. from /usr/local/bin/ to /usr/local

cd ../ Move up one level in directory tree and down a different branch (eg. if you are in /usr/local/bin and you want to move 'laterally; to /usr/local/bin2, type cd ../bin2

Change Directories using Absolute Paths

cd /usr/local/etc/ No matter where you are, go to the root level (indicated by the first '/') and drill down from there.
If you forget the initial '/', the system will look for a directory called 'usr' in your current directory.