ncargrun: 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/ncargrun - from package: ncl

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

On Debian possible default full paths are:

/usr/bin/ncargrun - from package: ncl-ncarg

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

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