drwxr-sr-x 7 8740 8496 4096 2008-02-28 15:04 eclipse

ivywjhua

crane@wjh:/opt$ ll
total 129120
drwxr-sr-x 7 8740 8496      4096 2008-02-28 15:04 eclipse
-rwxr-xr-x 1 root root 132076375 2008-05-04 12:24
eclipse-jee-europa-winter-linux-gtk.tar.gz
crane@wjh:/opt$
crane@wjh:/opt$ cd eclipse/
crane@wjh:/opt/eclipse$ ll
total 412
drwxr-sr-x  2 8740 8496   4096 2008-02-28 15:04 about_files
-rw-r--r--  1 8740 8496  13852 2008-02-28 15:04 about.html
drwxr-sr-x  2 8740 8496   4096 2008-02-28 15:04 configuration
-rwxr-xr-x  1 8740 8496  21423 2008-02-28 15:04 eclipse
-rw-r--r--  1 8740 8496     92 2008-02-28 15:04 eclipse.ini
-rw-r--r--  1 8740 8496  16536 2008-02-28 15:04 epl-v10.html
drwxr-sr-x 86 8740 8496  12288 2008-02-28 15:03 features
-rw-r--r--  1 8740 8496   9022 2008-02-28 15:04 icon.xpm
-rwxr-xr-x  1 8740 8496 266168 2008-02-28 15:04 libcairo-swt.so
-rw-r--r--  1 8740 8496   6506 2008-02-28 15:04 notice.html
drwxr-sr-x 25 8740 8496  40960 2008-02-28 15:03 plugins
drwxr-sr-x  2 8740 8496   4096 2008-02-28 15:04 readme
crane@wjh:/opt/eclipse$

为什么解压后会出现 8740 8496
是不是 sgid的原因？

我要在linux上装eclipse,
下载了eclipse-jee-europa-winter-linux-gtk.tar.gz
sudo 解压 到 /opt
运行时出错