dots: 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/dots - from package: dots

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

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