mysql_tzinfo_to_sql: 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/mysql_tzinfo_to_sql - from package: mysql55w-server
/usr/bin/mysql_tzinfo_to_sql - from package: mysql-server

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

On Debian possible default full paths are:

/usr/bin/mysql_tzinfo_to_sql - from package: mariadb-server-10.0
/usr/bin/mysql_tzinfo_to_sql - from package: mysql-server-5.5

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

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