synchronize.sh: 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/share/jets3t/bin/synchronize.sh - from package: jets3t

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

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