GNU ed 是一个8位的 POSIX 面向行的文本编辑器。
GNU ed 1.7 改进记录：
1. Shows the "Try 'ed --help' for more information." message if a bad option is given on the command line.
2. Quote characters in messages have been changed as advised by GNU Coding Standards.
3. The description of address offsets in the manual and a link to the Bash manual have been fixed.
4. The configure option "--datadir" has been renamed to "--datarootdir" to follow GNU Standards.
5. The target "install-bin" has been added to the Makefile
主页：http://www.gnu.org/software/ed/ed.html
下载：http://mirror.bjtu.edu.cn/gnu/ed/
来自:开源中国社区
