storeBackupCheckBackup: 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

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

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