nfc-emulate-uid: 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

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-uid - from package: libnfc-examples

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