mysqlrplcheck: 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/mysqlrplcheck - from package: mysql-utilities

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

On Debian possible default full paths are:

/usr/bin/mysqlrplcheck - from package: mysql-utilities

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

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