keysync: 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/keysync - from package: keysync

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

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