This my be simple question. The /tmp directory permission is : drwxrwxrwx 22 root root 4096 Feb 2 09:59 tmp how to change from rwxrwxrwx to rwxrwxrwt? Thanks. _______________________________________________________________________ Yahoo!奇摩電子信箱 一人一信送愛心，Yahoo!奇摩兒童助學計畫 http://tw.promo.yahoo.com/2004charity/index.html