Mac OS X auto save location

Looking for where Mac OS X auto save your unsaved file?
well, it's located at the following location:

~/Library/Application Support

~/Library/Containers


For example,
the unsaved file for textwrangler is located at

~/Library/Application Support/TextWrangler/Auto-Save Recovery

the unsaved file for text edit is located at

~/Library/Containers/com.apple.TextEdit/Data/Library/Autosave Information

Convert dmg file to iso file in mac

To convert dmg file to iso, such as osx InstallESD.dmg to iso so you can install it on vmware, then run the following command in mac terminal:

hdiutil convert InstallESD.dmg -format UDTO -o osx.iso

This will create a file called, osx.iso.cdr. Then run the following command to rename it to .iso file:

mv osx.iso.cdr osx.iso

Show Library folder on Mac finder

to enable Library folder on mac finder so you can see it, run this command:

chflags nohidden ~/Library/

to hide the library again, run this command:

chflags hidden ~/Library/