redund: 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/redund - from package: lrslib

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

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