Footnotes

[1] Understand: under GPL, even if such is not the case of its toolkit. "Free" here has the meaning it has in "free speech".
[2] AnotherLevel is a menu of applications independent of KDE and GNOME.
[3] There are three distinct timestamps for each file in Unix: the last file access date (atime), i.e. the last date when the file was opened for read or write; the last date when the inode attributes were modified (mtime); and finally, the last date when the contents of the file were modified (ctime).
[4] It is enough for the user to have write access on the directory, to be able to delete files in it, even if he is not the owner of the files.
[5] You might think it crazy to say "files ending with .gif" rather than "GIF images". However, once again, files under Unix only have an extension by convention: extensions in no way define a file type. A file ending with .gif could perfectly well be a JPEG image, an application file, a text file or any other type.
[6] Yes, it will indeed be a GIF image :)
[7] Remember: Unix differentiates between uppercase and lowercase. The 'HOME' environment variable and the 'home' variable are not the same.
[8] "To edit text" means to modify the contents of a file holding mainly letters, digits, and punctuation signs; such files can be electronic messages, programs source code, documents, or configuration files.
[9] Emacs has been designed to function in a maximum of environments, and even today there are terminals which have no arrow keys. This is even more true of VI.
[10] A shortcut for dl (delete one character forward) is 'x'; a shortcut for dh is 'X'; dd deletes the current line.
[11] ... if the cursor is positioned at the beginning of the first word!
[12] y6w literally means: "Yank 6 words".
[13] If this directory is on the same filesystem as the inode.
[14] Be sure to understand what "adding a link" means both for a file and a directory :)
[15] If you remember what has been told in section 47.0, you know what descriptors 0, 1 and 2 stand for.
[16] lsdev is part of the procinfo package.
[17] And not hackers!
[18] Now you see why putting /sbin on a filesystem other than the root filesystem is a very bad idea :)
[19] So you can, if you want, add or remove virtual consoles by modifying this file, up to a maximum of 64, by following the syntax. But don't forget that X also runs on a virtual console! So leave it at least one...
[20] Linux can manage up to 64 mounted filesystems simultaneously.
[21] The way to find the name of a disk is explained in the Install guide.
[22] 8 bits means 2^8 colors, i.e. 256; 16 bits means 2^16 colors, i.e. 64k, i.e. 65536; in 24 bits as in 32 bits, color is coded on 24 bits, i.e. 2^24 possible colors, in other words exactly 16M, or a bit more than 16 million.
[23] This is not really true, because some proprietary software also provide their sources. But unlike what happens with free software, the final user is not allowed to use them as he wants.
[24] More and more, a new program, called bzip2, more efficient on text files (and needing more computing power and more CPU), is being used. See, later, the section 63.0 that deals specifically with that.
[25] A proverb from the BSD world says: "Never trust a package you don't have the sources for."
[26] Analyze the error message returned by make. Normally, the last lines should contain a directory (a message like make[1]: Leaving directory `/home/benj/Project/foo'). Pick out the one with the highest number. To check that it is the good one, go to the directory and execute make again to obtain the same error.
[27] Note that this example requires that /home/httpd and /home/httpd/obsolete be on the same filesystem!

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