sperl5.10.1: 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
/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/sperl5.10.1 - from package: perl-suidperl

You may install the required package with command yum install {package}
Error in other languages:
sperl5.10.1: bevel nie gevind nie
sperl5.10.1: comandă negăsită
sperl5.10.1: comando não encontrado
sperl5.10.1: commande introuvable
sperl5.10.1: command not found
sperl5.10.1: käsku ei ole
sperl5.10.1: không tìm thấy lệnh
sperl5.10.1: komanda nerasta
sperl5.10.1: Kommando nicht gefunden.
sperl5.10.1: kommandot finns inte
sperl5.10.1: komut yok
sperl5.10.1: nie znaleziono polecenia
sperl5.10.1: níor aimsíodh an t-ordú
sperl5.10.1: no se encontró la orden
sperl5.10.1: no s'ha trobat l'ordre
sperl5.10.1: opdracht niet gevonden
sperl5.10.1: parancs nem található
sperl5.10.1: perintah tidak ditemukan
sperl5.10.1: príkaz nenájdený
sperl5.10.1: příkaz nenalezen
sperl5.10.1: команда не найдена
sperl5.10.1: командата не е открита
sperl5.10.1: 命令找不到
sperl5.10.1: コマンドが見つかりません