test_chealpix2: 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/test_chealpix2 - from package: chealpix-devel

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

Error in other languages:
test_chealpix2: bevel nie gevind nie
test_chealpix2: comandă negăsită
test_chealpix2: comando não encontrado
test_chealpix2: commande introuvable
test_chealpix2: command not found
test_chealpix2: käsku ei ole
test_chealpix2: không tìm thấy lệnh
test_chealpix2: komanda nerasta
test_chealpix2: Kommando nicht gefunden.
test_chealpix2: kommandot finns inte
test_chealpix2: komut yok
test_chealpix2: nie znaleziono polecenia
test_chealpix2: níor aimsíodh an t-ordú
test_chealpix2: no se encontró la orden
test_chealpix2: no s'ha trobat l'ordre
test_chealpix2: opdracht niet gevonden
test_chealpix2: parancs nem található
test_chealpix2: perintah tidak ditemukan
test_chealpix2: príkaz nenájdený
test_chealpix2: příkaz nenalezen
test_chealpix2: команда не найдена
test_chealpix2: командата не е открита
test_chealpix2: 命令找不到
test_chealpix2: コマンドが見つかりません