odf2xhtml: command not found

Have You tried accessing the binary with the full path?

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/odf2xhtml - from package: python-odf

You may install the required package with command apt-get install {package}
Error in other languages:
odf2xhtml: bevel nie gevind nie
odf2xhtml: comandă negăsită
odf2xhtml: comando não encontrado
odf2xhtml: commande introuvable
odf2xhtml: command not found
odf2xhtml: käsku ei ole
odf2xhtml: không tìm thấy lệnh
odf2xhtml: komanda nerasta
odf2xhtml: Kommando nicht gefunden.
odf2xhtml: kommandot finns inte
odf2xhtml: komut yok
odf2xhtml: nie znaleziono polecenia
odf2xhtml: níor aimsíodh an t-ordú
odf2xhtml: no se encontró la orden
odf2xhtml: no s'ha trobat l'ordre
odf2xhtml: opdracht niet gevonden
odf2xhtml: parancs nem található
odf2xhtml: perintah tidak ditemukan
odf2xhtml: príkaz nenájdený
odf2xhtml: příkaz nenalezen
odf2xhtml: команда не найдена
odf2xhtml: командата не е открита
odf2xhtml: 命令找不到
odf2xhtml: コマンドが見つかりません