Ed Mastery

"I'm glad someone's finally giving ed the attention it deserves."
- Ken Thompson, co-creator of Unix

Let me be perfectly clear: ed is the standard Unix text editor. If you don't know ed, you're not a real sysadmin.
Forty years after ed's introduction, internationally acclaimed author Michael W Lucas has finally unlocked the mysteries of ed for everyone. With Ed Mastery, you too can become a proper sysadmin.
Ed Mastery will help you:

understand buffers and addresses
insert, remove, and mangle text
master file management and shell escapes
comprehend regular expressions, searches, and substitutions
create high-performance scripts for transforming files

You must be at least this competent to use this computer. Read Ed Mastery today!