html2wiki: 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/html2wiki - from package: libhtml-wikiconverter-perl

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

Error in other languages:
html2wiki: bevel nie gevind nie
html2wiki: comandă negăsită
html2wiki: comando não encontrado
html2wiki: commande introuvable
html2wiki: command not found
html2wiki: käsku ei ole
html2wiki: không tìm thấy lệnh
html2wiki: komanda nerasta
html2wiki: Kommando nicht gefunden.
html2wiki: kommandot finns inte
html2wiki: komut yok
html2wiki: nie znaleziono polecenia
html2wiki: níor aimsíodh an t-ordú
html2wiki: no se encontró la orden
html2wiki: no s'ha trobat l'ordre
html2wiki: opdracht niet gevonden
html2wiki: parancs nem található
html2wiki: perintah tidak ditemukan
html2wiki: príkaz nenájdený
html2wiki: příkaz nenalezen
html2wiki: команда не найдена
html2wiki: командата не е открита
html2wiki: 命令找不到
html2wiki: コマンドが見つかりません