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

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

On Debian possible default full paths are:

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

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

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