delete_disabled.inc: 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/share/ampache/www/bin/delete_disabled.inc - from package: ampache-common

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

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