fprintd-delete: 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 CentOS possible default full paths are:

/usr/bin/fprintd-delete - from package: fprintd

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/fprintd-delete - from package: fprintd

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

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