vomsserver.pl: 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/sbin/vomsserver.pl - from package: perl-voms-server

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

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