glite-proxy-renewd: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/sbin/glite-proxy-renewd - from package: glite-px-proxyrenewal

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