carmen2simplemap: 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

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/carmen2simplemap - from package: mrpt-apps

You may install the required package with command apt-get install {package}
Error in other languages:
carmen2simplemap: bevel nie gevind nie
carmen2simplemap: comandă negăsită
carmen2simplemap: comando não encontrado
carmen2simplemap: commande introuvable
carmen2simplemap: command not found
carmen2simplemap: käsku ei ole
carmen2simplemap: không tìm thấy lệnh
carmen2simplemap: komanda nerasta
carmen2simplemap: Kommando nicht gefunden.
carmen2simplemap: kommandot finns inte
carmen2simplemap: komut yok
carmen2simplemap: nie znaleziono polecenia
carmen2simplemap: níor aimsíodh an t-ordú
carmen2simplemap: no se encontró la orden
carmen2simplemap: no s'ha trobat l'ordre
carmen2simplemap: opdracht niet gevonden
carmen2simplemap: parancs nem található
carmen2simplemap: perintah tidak ditemukan
carmen2simplemap: príkaz nenájdený
carmen2simplemap: příkaz nenalezen
carmen2simplemap: команда не найдена
carmen2simplemap: командата не е открита
carmen2simplemap: 命令找不到
carmen2simplemap: コマンドが見つかりません