tping: 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/tping - from package: lam-runtime

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

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