今天在安装Firefox时，出现如下错误
[root@localhost ~]# firefox XPCOMGlueLoad error for file /usr/lib64/firefox/libxul.so: /lib64/libnss3.so: version `NSS_3.30' not found (required by /usr/lib64/firefox/libxul.so) Couldn't load XPCOM.
查找资料得知，只需安装nss.x86_64即可
yum install nss.x86_64 -y