gensgmlenv: 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/gensgmlenv - from package: sgmltools-lite

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

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