Q:

what is com.apple.coresymbolicationd in caches?

Doing some cleanup on my Macbook Air with a 128GB SSD looking for big files to reduce the space used.  
I found something named com.apple.coresymbolicationd that is 1GB in the /System/Library/Caches folder I don't recall seeing it before.  Running Mountain Lion.
What is this and is there a way to clear it?
By the way I am using DaisyDisk to show the files and sizes.

A:

Symbolication means replacing memory addresses with symbols (like functions or variables) or for example adding function names and line number information. It is used for debugging and analyzing crash reports.
/System/Library/Caches/com.apple.coresymbolicationd/data was also about 600 MB on my account, so I guess it's normal. Deleting files in cache folders is generally safe, and /System/Library/Caches/ is even excluded from Time Machine backups.

A:

The files stored in the system and user Caches folder are there to speed up your Mac and a process will recreate them if you decide to move them to the Trash and reboot.
Most programs are well behaved enough to handle you deleting the files from under the running system, but I've also gotten into the habit of moving them to Trash and then rebooting to let the system recreate new folders if needed before deleting the files.
This core daemon is virtually undocumented by Apple and the one data file is likely an encrypted sqlite3 database file (or some other binary data store) for internal use by the OS to handle process control. You can look at the source code and system headers that belong to CoreSymbolication here as it interacts with the source for dtrace:

http://www.opensource.apple.com/source/dtrace/dtrace-78/libproc/libproc.m

A:

OS X El Capitan 10.11.3
it's safe to remove from terminal
sudo rm -rf /System/Library/Caches/com.apple.coresymbolicationd

