pcl_progressive_morphological_filter: 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_progressive_morphological_filter - from package: pcl-tools

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

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