umegaya-guess-url: 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/umegaya-guess-url - from package: umegaya

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

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