debiandoc2pdf: 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/debiandoc2pdf - from package: debiandoc-sgml

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

Error in other languages:
debiandoc2pdf: bevel nie gevind nie
debiandoc2pdf: comandă negăsită
debiandoc2pdf: comando não encontrado
debiandoc2pdf: commande introuvable
debiandoc2pdf: command not found
debiandoc2pdf: käsku ei ole
debiandoc2pdf: không tìm thấy lệnh
debiandoc2pdf: komanda nerasta
debiandoc2pdf: Kommando nicht gefunden.
debiandoc2pdf: kommandot finns inte
debiandoc2pdf: komut yok
debiandoc2pdf: nie znaleziono polecenia
debiandoc2pdf: níor aimsíodh an t-ordú
debiandoc2pdf: no se encontró la orden
debiandoc2pdf: no s'ha trobat l'ordre
debiandoc2pdf: opdracht niet gevonden
debiandoc2pdf: parancs nem található
debiandoc2pdf: perintah tidak ditemukan
debiandoc2pdf: príkaz nenájdený
debiandoc2pdf: příkaz nenalezen
debiandoc2pdf: команда не найдена
debiandoc2pdf: командата не е открита
debiandoc2pdf: 命令找不到
debiandoc2pdf: コマンドが見つかりません