autorenamer: command not found

Have You tried accessing the binary with the full path?

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/autorenamer - from package: autorenamer

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