How to implement `tail` command using CL?
"with-open-file" will read from the beginning of a file. If the file is VERY big how to read the last 20 lines efficiently ?

Sincerely!
How to implement `tail` command using CL?
===

"with-open-file" will read from the beginning of a file. If the file is VERY big how to read the last 20 lines efficiently ?

Sincerely!