nfc-emulate-forum-tag2: 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/nfc-emulate-forum-tag2 - from package: libnfc-examples

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

Error in other languages:
nfc-emulate-forum-tag2: bevel nie gevind nie
nfc-emulate-forum-tag2: comandă negăsită
nfc-emulate-forum-tag2: comando não encontrado
nfc-emulate-forum-tag2: commande introuvable
nfc-emulate-forum-tag2: command not found
nfc-emulate-forum-tag2: käsku ei ole
nfc-emulate-forum-tag2: không tìm thấy lệnh
nfc-emulate-forum-tag2: komanda nerasta
nfc-emulate-forum-tag2: Kommando nicht gefunden.
nfc-emulate-forum-tag2: kommandot finns inte
nfc-emulate-forum-tag2: komut yok
nfc-emulate-forum-tag2: nie znaleziono polecenia
nfc-emulate-forum-tag2: níor aimsíodh an t-ordú
nfc-emulate-forum-tag2: no se encontró la orden
nfc-emulate-forum-tag2: no s'ha trobat l'ordre
nfc-emulate-forum-tag2: opdracht niet gevonden
nfc-emulate-forum-tag2: parancs nem található
nfc-emulate-forum-tag2: perintah tidak ditemukan
nfc-emulate-forum-tag2: príkaz nenájdený
nfc-emulate-forum-tag2: příkaz nenalezen
nfc-emulate-forum-tag2: команда не найдена
nfc-emulate-forum-tag2: командата не е открита
nfc-emulate-forum-tag2: 命令找不到
nfc-emulate-forum-tag2: コマンドが見つかりません