"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!