＋设为首页 ＋添加到收藏夹
instead of creating a separate file for each version of a file, the sccs file system only stores the changes for each version of a file. these changes are referred to as deltas. the changes are tracked by the delta table in every sccs file.
an example of an sid number is: 【程序编程相关:prevent undeliberate】
each entry in the delta table contains information about who created the delta, when they created it, and why they created it. each delta has a specific sid (sccs identification number) of up to four digits. the first digit is the release, the second digit the level, the third digit the branch, and the fourth digit the sequence. 【推荐阅读:ulimit使用简介】
sid = 1.2.1.4that is, release 1, level 2, branch 1, sequence 4. 【扩展信息:stty技巧小全】
no sid digit can be 0, so there cannot be an sid of 2.0 or 2.1.2.0, for example.
... 下一页