PrettyPrintCrl: 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/bin/PrettyPrintCrl - from package: pki-java-tools

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

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