$ wget -c http://kernel.org/pub/linux/kernel/v2.6/...
$ wget http://........../.....sign
$ gpg -verify linux-...........sign (对下载的源代码包进行电子签名验证)
$ wget -c http://kernel.org/pub/linux/kernel/v2.6/...
$ wget http://........../.....sign
$ gpg -verify linux-...........sign (对下载的源代码包进行电子签名验证)