features-matching: 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/features-matching - from package: mrpt-apps

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

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