sxw2odt: 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/sxw2odt - from package: unoconv

You may install the required package with command apt-get install {package}
Error in other languages:
sxw2odt: bevel nie gevind nie
sxw2odt: comandă negăsită
sxw2odt: comando não encontrado
sxw2odt: commande introuvable
sxw2odt: command not found
sxw2odt: käsku ei ole
sxw2odt: không tìm thấy lệnh
sxw2odt: komanda nerasta
sxw2odt: Kommando nicht gefunden.
sxw2odt: kommandot finns inte
sxw2odt: komut yok
sxw2odt: nie znaleziono polecenia
sxw2odt: níor aimsíodh an t-ordú
sxw2odt: no se encontró la orden
sxw2odt: no s'ha trobat l'ordre
sxw2odt: opdracht niet gevonden
sxw2odt: parancs nem található
sxw2odt: perintah tidak ditemukan
sxw2odt: príkaz nenájdený
sxw2odt: příkaz nenalezen
sxw2odt: команда не найдена
sxw2odt: командата не е открита
sxw2odt: 命令找不到
sxw2odt: コマンドが見つかりません