hacha: 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/hacha - from package: hevea

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