ncp: 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/ncp - from package: nodejs-ncp
/usr/lib/node_modules/ncp/bin/ncp - from package: nodejs-ncp

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

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