mysqlrepair: 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 Debian possible default full paths are:

/usr/bin/mysqlrepair - from package: mariadb-client-10.0
/usr/bin/mysqlrepair - from package: mysql-client-5.5

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

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