Failed to check for installed and available applications.....что ето?

[chupizz]

Failed to check for installed and available applications

This is a major failure of your software management system. Please check for broken packages with synaptic, check the file permissions and correctness of the file '/etc/apt/sources.list' and reload the software information with: 'sudo apt-get update' and 'sudo apt-get install -f'.

[Autorun]

'sudo apt-get update' and 'sudo apt-get install -f'.

это делаем!

[chupizz]

'sudo apt-get update' and 'sudo apt-get install -f'.

это делаем!

sudo apt-get update' and 'sudo apt-get install -f'.
bash: sudo apt-get update: команду не знайдено

[Alatarr]

sudo apt-get update && sudo apt-get install -f