nhlcc: 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/nhlcc - from package: ncl-devel

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

On Debian possible default full paths are:

/usr/bin/nhlcc - from package: libncarg-bin

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

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