ucdtooff: 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/ucdtooff - from package: geomview

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

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