meandark: 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/meandark - from package: munipack

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

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