swift-container-sync: 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-container-sync - from package: swift-container

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