nccopy: 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/nccopy - from package: netcdf

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

On Debian possible default full paths are:

/usr/bin/nccopy - from package: netcdf-bin

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

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