I'm trying to install some apps for my pi 3, and it keeps giving me this error:

E: Unment dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

I tried inputted 'apt-get -f install' but it just gave me more errors:

E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unabke to lock the administration directory (/var/lib/dpkg), are you root?

I'll accept any answers. Help?

  • will you accept 42? ... lol
    – jsotola
    Commented Aug 17, 2020 at 16:06

1 Answer 1


please note the error message: are you root?

E: Unable to lock the administration directory (/var/lib/dpkg), are you root?

You have to prepend the commands with sudo, for example:

rpi ~$ sudo apt-get -f install
  • I typed in 'sudo apt-get -f install' and it installed something. However, at the end it said 'dpkg: error processing package perk-base (--configure); package is in a very bad inconsistent state; you should reinstall it before attempting configuration'
    – Sleeping
    Commented Aug 16, 2020 at 21:04
  • @Sleeping Please edit your question and explain the (new) situation, or create a new question about it.
    – Ingo
    Commented Aug 17, 2020 at 8:55

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