FuzzyDiff: 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/FuzzyDiff - from package: topp

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

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