I am using Mac OSX. When I type ls -l I see something like
drwxr-xr-x@ 12 xonic staff 408 22 Jun 19:00 .
drwxr-xr-x 9 xonic staff 306 22 Jun 19:42 ..
-rwxrwxrwx@ 1 xonic staff 6148 25 Mai 23:04 .DS_Store
-rw-r--r--@ 1 xonic staff 17284 22 Jun 00:20 filmStrip.cpp
-rw-r--r--@ 1 xonic staff 3843 21 Jun 21:20 filmStrip.h
What do the @'s mean?
It indicates the file has extended attributes. You can use the xattr command-line utility to view and modify them:
xattr -l file # lists the names of all xattrs.
xattr -w attr_name attr_value file # sets xattr attr_name to attr_value.
xattr -d attr_name file # deletes xattr attr_name.
xattr -c file # deletes all xattrs.
xattr -h # prints help
In Snow Leopard, at least, you can do this to show more information:
It has extended attributes - See the OSX man page here for more information on ls.
You may want to have a look at this post in the Apple mailing lists. It explains that the @ shows that the Finder has extended attributes other than ACL.
I think it means that the file/directory has extended attributes.
In addition to
Michael Mrozek's answer:
On OSX 10.10 (Yosemite) you can have to use these attrx parameters:
xattr -l file
xattr -w attr_name attr_value file
xattr -d attr_name file