Footnotes

(1)

Using a number as a user name is common in some environments.

(2)

If you use a non-POSIX locale (e.g., by setting LC_ALL to `en_US'), then sort may produce output that is sorted differently than you're accustomed to. In that case, set the LC_ALL environment variable to `C'. Note that setting only LC_COLLATE has two problems. First, it is ineffective if LC_ALL is also set. Second, it has undefined behavior if LC_CTYPE (or LANG, if LC_CTYPE is unset) is set to an incompatible value. For example, you get undefined behavior if LC_CTYPE is ja_JP.PCK but LC_COLLATE is en_US.UTF-8.

(3)

If you use a non-POSIX locale (e.g., by setting LC_ALL to `en_US'), then ls may produce output that is sorted differently than you're accustomed to. In that case, set the LC_ALL environment variable to `C'.

(4)

However, some systems (e.g., FreeBSD) can be configured to allow certain regular users to use the chroot system call, and hence to run this program. Also, on Cygwin, anyone can run the chroot command, because the underlying function is non-privileged due to lack of support in MS-Windows.

(5)

Redhat Linux 6.1, for the November 2000 revision of this article.

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