Revision history [back]

dep is a typo; it should be deb

You should only have one ros-latest.list. I suggest you remove ross-latest.list and correct your existing ros-latest.list.

dep is a typo; it should be deb

You should only have one ros-latest.list. I suggest you remove ross-latest.list and correct your existing ros-latest.list.

EDIT:

You should be able to make the above changes using sudo:

Remove the offending file: sudo rm /etc/apt/sources.list.d/ross-latest.list

Edit the existing file: sudo gedit /etc/apt/sources.list.d/ros-latest.list

It also sounds like you are using grep incorrectly. When given a single argument, grep reads from stdin (usually the terminal); this is probably what you're seeing. Try running grep like: grep -r -i ros /etc/apt/ ; this will grep recursively (-r, all files and subfolders), ignoring case (-i) for anything matching ros in the directory /etc/apt/