xdhamma: 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/xdhamma - from package: display-dhammapada

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

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