storeBackupDel: 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/storeBackupDel - from package: storebackup
/usr/share/storebackup/bin/storeBackupDel - from package: storebackup

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

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