pcl_compute_hausdorff: 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/pcl_compute_hausdorff - from package: pcl-tools

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

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