locatediff: 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/locatediff - from package: atlc

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

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