Command:
# yum -y install openssh-server
Result:
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: ftp.jaist.ac.jp
* extras: ftp.jaist.ac.jp
* updates: ftp.jaist.ac.jp
Package openssh-server-6.6.1p1-25.el7_2.x86_64 already installed and latest version
Nothing to do