node: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/node - from package: nodejs

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/node - from package: nodejs-legacy
/usr/sbin/node - from package: node

You may install the required package with command apt-get install {package}

Error in other languages:
node: bevel nie gevind nie
node: comandă negăsită
node: comando não encontrado
node: commande introuvable
node: command not found
node: käsku ei ole
node: không tìm thấy lệnh
node: komanda nerasta
node: Kommando nicht gefunden.
node: kommandot finns inte
node: komut yok
node: nie znaleziono polecenia
node: níor aimsíodh an t-ordú
node: no se encontró la orden
node: no s'ha trobat l'ordre
node: opdracht niet gevonden
node: parancs nem található
node: perintah tidak ditemukan
node: príkaz nenájdený
node: příkaz nenalezen
node: команда не найдена
node: командата не е открита
node: 命令找不到
node: コマンドが見つかりません