error_log How to delete all via SSH?

Hello,

Today I check few of my websites folder under my web server I found that most of the folders contains the file "error_log" at some folders it is in smaller size but in others its around 600-900 MB in size per file. My question is

1. Whether its wise to stop creation of that file by Apache? If yes then how to stop it?

2. Second question is can we stop it for only few websites?

3. And is that safe to delete error_log file? If yes how to search that file in SSH and how to...

error_log How to delete all via SSH? WordPress ...