dnie-tool: 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/dnie-tool - from package: opensc

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