import-bug-from-debian: command not found

Have You tried accessing the binary with the full path?

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/import-bug-from-debian - from package: ubuntu-dev-tools

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