How to fix a .bashrc that's been edited wrongly?

Question

I had edited the bashrc file wrongly in my Ubuntu, while trying to put an "export" command in bashrc for javac.

When I type sudo, it's saying:

Command 'sudo' is available in '/usr/bin/sudo' The command could not be located because '/usr/bin' is not included in the PATH environment >variable. sudo: command not found

How should I correct this?

Answer 1

Restore your .bashrc with the following command:

cp /etc/skel/.bashrc ~

If you want to see the differences between your customized .bashrc and the default one, use this (no changes are made):

diff /etc/skel/.bashrc ~/.bashrc

Answer 2

You likely stomped on your existing PATH variable. Make sure that if you export PATH, include the existing PATH, too:

export PATH=$PATH:/whatever/you/added

Answer 3

you can just type the full path to sudo:

/usr/bin/sudo vim /etc/bashrc