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Although current disk drives afford each user ample storage for ordinary needs, disk space is finite. Your files count against the total disk space available for anyone's use. UNIX provides tools that let you limit your permanent storage to what you really need.
These tools include the du
command, which tells you how much space
you're using, the piping utility, which reduces the need for temporary
files, and a hierarchical file system, which makes it easy to organize
your files.
Another way to use disk space efficiently is to delete all files you don't need.
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