jkmeter: 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/jkmeter - from package: jkmeter

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

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