一、如何得知共安装了多少个软件包?
[plain] view plaincopy
[root@localhost ~]# rpm -qa | wc -l
217
二、如何得知安装了那些软件包?
[plain] view plaincopy
[root@localhost ~]# rpm -qa | sort
acl-2.2.49-6.el6.x86_64
aic94xx-firmware-30-2.el6.noarch
atmel-firmware-1.3-7.el6.noarch
attr-2.4.44-7.el6.x86_64
rpm -qa
rpm -qa