Where's the space for Mac OS x?

Remember what's going on. Look at the size of the/cores/directory.

The cores directory is the data that holds the program dump, which is useless for most people. can be deleted. If you encounter the program, always generate dump files, the hard disk instantly full.

Typical: c/C + + plugin in Android studio. Well, silently occupy the Lao Zi 30G space, until the hard disk is full. Solution: Disable the plugin. Delete the file under cores.

In addition, you can turn off core dump:

Permanently closed, a row is added to the/etc/sysctl.conf (if present, the value is modified to 0), and the restart takes effect:

Kern.coredump=0

0 o'clock off, currently in effect, after a restart failure:

sudo sysctl-w kern.coredump=0

Where's the space for Mac OS x?