[mac osx] file attribute에 @가 있는 것은?

attribute extend라는 것인데 아직은 정확히 개념을 잡지 않고 사용법만 익힌 후 넘어간다.

Use the xattr command. You can inspect the extended attributes:

$ xattr s.7z
com.apple.metadata:kMDItemWhereFroms
com.apple.quarantine

and use the -d option to delete one extended attribute:

$ xattr -d com.apple.quarantine s.7z
$ xattr s.7z
com.apple.metadata:kMDItemWhereFroms

you can also use the -c option to remove all extended attributes:

$ xattr -c s.7z
$ xattr s.7z

xattr -h will show you the command line options, and xattr has a man page.

http://stackoverflow.com/questions/4833052/how-do-i-remove-the-extended-attributes-on-a-file-in-mac-os-x