「curl --silent --location https://rpm.nodesource.com/setup_5.x | bash -」と入力
[root@centos ~]# curl --silent --location https://rpm.nodesource.com/setup_5.x | bash -
## Installing the NodeSource Node.js 5.x repo...
## Inspecting system...
+ rpm -q --whatprovides redhat-release || rpm -q --whatprovides centos-release || rpm -q --whatprovides cloudlinux-release || rpm -q --whatprovides sl-release
+ uname -m
## Confirming "el7-x86_64" is supported...
+ curl -sLf -o /dev/null 'https://rpm.nodesource.com/pub_5.x/el/7/x86_64/nodesource-release-el7-1.noarch.rpm'
## Downloading release setup RPM...
+ mktemp
+ curl -sL -o '/tmp/tmp.WjEfCgXjPg' 'https://rpm.nodesource.com/pub_5.x/el/7/x86_64/nodesource-release-el7-1.noarch.rpm'
## Installing release setup RPM...
+ rpm -i --nosignature --force '/tmp/tmp.WjEfCgXjPg'
## Cleaning up...
+ rm -f '/tmp/tmp.WjEfCgXjPg'
## Checking for existing installations...
+ rpm -qa 'node|npm' | grep -v nodesource
## Run `yum install -y nodejs` (as root) to install Node.js 5.x and npm.
## You may also need development tools to build native addons:
## `yum install -y gcc-c++ make`
[root@centos ~]#