hp_testOrthogonalSkyMap: 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/hp_testOrthogonalSkyMap - from package: healpix-c++

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

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