I want to install a new theme to Plank but the folder is locked and I have no idea how to unlock it. Super new to Linux.

2 Answers 2


Are you in Files? If so, that sounds like you need to open Files by right-clicking on it and selecting "Run as Administrator," or something to that effect (I'm not on my elementary machine right now.). Then try opening the file. On a side note: if it's a theme, and it's in the proper folder, can you just change the theme by ctrl+right-clicking on plank and changing the theme in the dropdown?


To modify a system or locked folder in Elementary OS or linux, open Terminal (Window + T or Command + T) and simply use this two commands below: (run one command each times)

sudo su 
chmod -R go+rw /path/folder name 

Example: chmod -R go+rw /opt/lampp

  • Thank you for conttibuting to the elementay OS Stack Exchange. Reading the question, we must asume Cayden is refering to the inablility to ad files to /usr/share/plank/themes. Using your solution, although tehnically correct, would also result in changing the permissions to a 'system' folder, and that is strongly discouraged. In Cayden's specific situation it is strogly recommened to simply copy the new theme in ~/.local/share/plank/themes. This way, permissions remain untouched, and the new theme might be preserved in case of a system reinstallation (assuming /home is backed up)
    – Vlad
    Dec 10, 2020 at 6:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.