swift-object-expirer: 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/swift-object-expirer - from package: swift-object-expirer

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