I was going to attempt to move a couple of sites to a different host and when looking in FTP under public_html, I am finding alot of Files called core. with a 4 or 5 digit number after the .(period) (Ex: core.11345 and core.2118) Under file size most of them are around 76,238,848 (pretty large). File type is listed as the 4 or 5 digit number and then the word file (EX: 11345 File & 2118 File) Permissions on all of them are 0600.
One of the sites has around 140 of these large core. files some of the other sites have just a few.
Can anyone help with what these files are and how I would know if it is safe to delete them without affecting the sites? Or how to figure out what these files are and what is creating them?
Thank You so much!!!