odt2doc: 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/odt2doc - from package: unoconv

You may install the required package with command apt-get install {package}
Error in other languages:
odt2doc: bevel nie gevind nie
odt2doc: comandă negăsită
odt2doc: comando não encontrado
odt2doc: commande introuvable
odt2doc: command not found
odt2doc: käsku ei ole
odt2doc: không tìm thấy lệnh
odt2doc: komanda nerasta
odt2doc: Kommando nicht gefunden.
odt2doc: kommandot finns inte
odt2doc: komut yok
odt2doc: nie znaleziono polecenia
odt2doc: níor aimsíodh an t-ordú
odt2doc: no se encontró la orden
odt2doc: no s'ha trobat l'ordre
odt2doc: opdracht niet gevonden
odt2doc: parancs nem található
odt2doc: perintah tidak ditemukan
odt2doc: príkaz nenájdený
odt2doc: příkaz nenalezen
odt2doc: команда не найдена
odt2doc: командата не е открита
odt2doc: 命令找不到
odt2doc: コマンドが見つかりません