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root can't write or modify /bin, /usr/bin, /sbin, /usr/sbin

root can't write or modify /bin, /usr/bin, /sbin, /usr/sbin

On a debian system, I'm logged in as root.

Asked by: Guest | Views: 82
Total answers/comments: 2
Guest [Entry]

You might want to check the file attributes using lsattr. It's well possible that those directories have been made "immutable" to prevent alteration, even by root.
Guest [Entry]

To add on to Manni's answer, often times a file system will be mounted read only if there was an error during a file system check. You may want to check your boot logs to see if there were errors.