Exercise 32: Quality Seals

Security information is readily found at a number of Linux-related sites. The first to check, and stay abreast of, is always the vendor's site. Looking at http://www.novell.com/linux/security provides an overview of Linux-related security issues with links to a number of relevant pages. You should also keep abreast of issues and problems posted at http://www.cert.org and http://www.linuxsecurity.com.

Information on any Linux command can be found through a number of utilities inherent in Linux:

• The man tool offers pages on each utility. For example, to find information about the setfacl tool, the command would be man setfacl.

• Most utilities have the built-in option of --help to offer information. From the command line, you can type setfacl --help to see a quick list of available options.

• The info utility can be used to view the man pages, as well for example, info setfacl.

• The whatis utility can show if there is more than one set of documentation on the system for the utility: whatis setfacl.

• The whereis utility will list all the information it can find about locations associated with a file for example, whereis setfacl.

• The apropos utility uses the whatis database to find values and returns the short summary information: apropos setfacl.

The customer should also be reminded that the Web is a great place to find help information on commands as well.