This will reduce the filesize of foo and bar to 0 bytes:

truncate -s0 foo bar

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

If the files do not exist they will be created.

You can use this to easily truncate your application's log files:

truncate -s0 log/*.log

Truncate files to zero length