rsyncrypto_recover: 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/rsyncrypto_recover - from package: rsyncrypto

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

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