remind: 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/remind - from package: remind

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

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