apbs-uhbd_asc2bin: 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/apbs-uhbd_asc2bin - from package: apbs-tools

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

Error in other languages:
apbs-uhbd_asc2bin: bevel nie gevind nie
apbs-uhbd_asc2bin: comandă negăsită
apbs-uhbd_asc2bin: comando não encontrado
apbs-uhbd_asc2bin: commande introuvable
apbs-uhbd_asc2bin: command not found
apbs-uhbd_asc2bin: käsku ei ole
apbs-uhbd_asc2bin: không tìm thấy lệnh
apbs-uhbd_asc2bin: komanda nerasta
apbs-uhbd_asc2bin: Kommando nicht gefunden.
apbs-uhbd_asc2bin: kommandot finns inte
apbs-uhbd_asc2bin: komut yok
apbs-uhbd_asc2bin: nie znaleziono polecenia
apbs-uhbd_asc2bin: níor aimsíodh an t-ordú
apbs-uhbd_asc2bin: no se encontró la orden
apbs-uhbd_asc2bin: no s'ha trobat l'ordre
apbs-uhbd_asc2bin: opdracht niet gevonden
apbs-uhbd_asc2bin: parancs nem található
apbs-uhbd_asc2bin: perintah tidak ditemukan
apbs-uhbd_asc2bin: príkaz nenájdený
apbs-uhbd_asc2bin: příkaz nenalezen
apbs-uhbd_asc2bin: команда не найдена
apbs-uhbd_asc2bin: командата не е открита
apbs-uhbd_asc2bin: 命令找不到
apbs-uhbd_asc2bin: コマンドが見つかりません