watershed: 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/watershed - from package: chiark-utils-bin

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

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