make_das_conf: 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/make_das_conf - from package: gbrowse

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

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