fuzznuc: 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/fuzznuc - from package: emboss

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

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