knowthelist: 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/knowthelist - from package: knowthelist

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

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