swift-orphans: 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-orphans - from package: swift

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