cronometer: 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/cronometer - from package: cronometer

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

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