pcscd: 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/pcscd - from package: pcsc-lite

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

On Debian possible default full paths are:

/usr/sbin/pcscd - from package: pcscd

You may install the required package with command apt-get install {package}

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