hachoir-wx: 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/hachoir-wx - from package: python-hachoir-wx

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

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