Deleting files for freeing the disk space My MBA (OS 10.9.5) is showing messages of full disk. So I checked the big files in the system. However I don't want to mess with system files as I don't know anything about them. So asking the fellow gentlemen, if it is safe to delete any of the following files:


snapshots.db 2.1 GB '/private/var/db/systemstats/snapshots.database'
swapfile1    1.1 GB '/private/var/vm/swapfile1'
sleepimage   1.1 GB '/private/var/vm/sleepimage'
general.svc 488 MB '/System/Library/Speech/Recognizers/SpeechRecognitionCoreLanguages/en_US.SpeechRecognition/Contents/Resources/lm/combined/general.svc'
dyld_shared_cache_x86_64 , dyld_shared_cache_i386 386 &amp; 274 MB '/private/var/db/dyld/dyld_shared_cache_x86_64'
safebrowsing.db '/private/var/folders/s2/_szqd_q13kq9lyl32lv0jz7h0000gn/C/com.apple.Safari/SafeBrowsing.database'


It's not about the memory(RAM), it's about the hard disk space. 

Also I'll be glad if someone can point me to which other junk files I can delete from the mac. I prefer to delete files manually rather than using any app but if there's any simple no frills utility app which works, I'll happily use that.
Honestly delete nothing in those directories manually. You'll likely crash your system if it even lets you delete them. Stick with files in "userland." which would be at the path /Users/[YOURUSERNAME]/."

If you are running out of disk space (which is completely different from running out of memory) I would use a gui tool like Grand Perspective and then delete the files that you no longer need that occupy locations in your user directory.

I'm sure there are shell commands to list, recursively, files in specific directories in order of file size, but I don't know how to do that, preferring GUI tools that do the same thing.

If you are running out of memory in your MBA then the only choice you have (as all MBA memory is non-upgradable) is to see if you have a bunch of things running at startup (system preferences > users > [YOUR USERNAME] > login items) and remove some of them or just run fewer apps at the same time.