aria_read_log: 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 Debian possible default full paths are:

/usr/bin/aria_read_log - from package: mariadb-server-10.0

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