liblas-config: 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/liblas-config - from package: liblas-dev

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

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