［４］以下の呪文はシンボリックリンクの確認らしい。

$ cd /System/Library/Frameworks/JavaVM.framework/Versions
$ ls -l
total 40
lrwxr-xr-x 1 root wheel 5 2 8 2011 1.3@ -> 1.3.1
drwxr-xr-x 8 root wheel 272 2 8 2011 1.3.1/
lrwxr-xr-x 1 root wheel 5 2 8 2011 1.4@ -> 1.4.2
drwxr-xr-x 8 root wheel 272 2 8 2011 1.4.2/
lrwxr-xr-x 1 root wheel 5 2 8 2011 1.5@ -> 1.5.0
drwxr-xr-x 8 root wheel 272 2 8 2011 1.5.0/
drwxr-xr-x 8 root wheel 272 10 31 23:37 1.6.0/
drwxr-xr-x 6 root wheel 204 2 8 2011 A/
lrwxr-xr-x 1 root wheel 1 2 8 2011 Current@ -> A
lrwxr-xr-x 1 root wheel 3 2 8 2011 CurrentJDK@ -> 1.5