mysqltest_embedded: 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/mysqltest_embedded - from package: mysql55w-embedded-devel
/usr/bin/mysqltest_embedded - from package: mysql-embedded-devel

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

On Debian possible default full paths are:

/usr/bin/mysqltest_embedded - from package: mariadb-test-10.0

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

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