WriteLineFile: 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/WriteLineFile - from package: ncl

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

On Debian possible default full paths are:

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

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

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