icp-slam: 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/icp-slam - from package: mrpt-apps

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

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