card_eventmgr: 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/card_eventmgr - from package: pam_pkcs11

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

On Debian possible default full paths are:

/usr/bin/card_eventmgr - from package: libpam-pkcs11

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