repl-monitor: 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/repl-monitor - from package: 389-ds-base

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

On Debian possible default full paths are:

/usr/bin/repl-monitor - from package: 389-ds-base

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

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