ncecat: 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/ncecat - from package: nco

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

On Debian possible default full paths are:

/usr/bin/ncecat - from package: nco

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

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