rasqal-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 CentOS possible default full paths are:

/usr/bin/rasqal-config - from package: rasqal-devel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/rasqal-config - from package: librasqal3-dev

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

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