junit: 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
/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/junit - from package: junit

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