FreeBSD安裝時自帶2個shell:csh和sh。
Compared to Linux, FreeBSD is distributed under a much less restrictive license, which allows virtually unrestricted re-use and modification of the source code for any purpose.
相較於Linux*作系統,FreeBSD是分佈在一個更寬鬆的許可*,這幾乎可以無限制地重複使用和源代碼修改為任何目的。