Change directory. This command makes target_directory your current working directory. It is a strong contender for the single most commonly used command in Linux. target_directory may be either a relative path, an absolute path, a shell symbol, or a shell variable.
Example: In the examples on the usage of the cd command presented next, assume that the shell variable $BOB stands for /home/bob. The directory tree is the same as the sample directory tree printed in the front of this chapter:
|Starting Directory||target_directory Type||Example Command||Ending Directory|
|/home/shawkins||shell symbol||cd ..||/home|