gadmin-samba: 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-samba - from package: gadmin-samba-dbg
/usr/sbin/gadmin-samba - from package: gadmin-samba

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

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