runtest.bat: 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/share/doc/libquantlib0/examples/test-suite/bin/runtest.bat - from package: libquantlib0-dev

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

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