查询某软件某应用 某服务 是否安装 有大用

[root@localhost ~]# yum list all | grep openssl

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

file:///media/cdrom/Server/repodata/repomd.xml: [Errno 5] OSError: [Errno 2] 没有那个文件或目录: '/media/cdrom/Server/repodata/repomd.xml'

Trying other mirror.

openssl.i686                               0.9.8e-26.el5_9.1         installed

openssl-devel.i386                         0.9.8e-26.el5_9.1         installed

openssl.i386                               0.9.8e-26.el5_9.1         development

openssl-perl.i386                          0.9.8e-26.el5_9.1         development

openssl097a.i386                           0.9.7a-11.el5_8.2         development

xmlsec1-openssl.i386                       1.2.9-8.1.2               development

xmlsec1-openssl-devel.i386                 1.2.9-8.1.2               development

[root@localhost ~]#

[root@localhost ~]# rpm -q openssl

openssl-0.9.8e-26.el5_9.1

[root@localhost ~]# rpm -qa | grep  openssl

openssl-devel-0.9.8e-26.el5_9.1

openssl-0.9.8e-26.el5_9.1

[root@localhost ~]#