sgmltools: 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/sgmltools - from package: sgmltools-lite

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

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