gadmin-rsync: 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/lib/debug/usr/sbin/gadmin-rsync - from package: gadmin-rsync-dbg
/usr/sbin/gadmin-rsync - from package: gadmin-rsync

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

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