dynare++: 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/dynare++ - from package: dynare

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