ERPairFinder: 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 Debian possible default full paths are:

/usr/bin/ERPairFinder - from package: topp

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

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