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The command could not be located because '/usr/bin' is not included in the PATH environment variable [duplicate]

Ask Question Can't execute terminal commands: "the command 'sudo' is available in '/usr/bin/sudo'" (5 answers)

Can someone tell me why I get this error when I try to add a repository and what if anything I can do about it?

When I try to add a repository using:

sudo add-apt-repository ppa:upubuntu-com/tor
I get the following error:
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
Your PATH variable has been messed up.  Unless you are trying to run a restricted user with rbash, you should have /usr/bin in $PATH.  For a terminal session you can fix this by running:
export PATH="/usr/bin:$PATH"
As @SylvainPineau mentioned, this answer covers how to permanently fix your path by editing the /etc/environment file.
                This worked for me. /usr/bin/sudo /usr/bin/nano ~/.bashrc  export PATH="/usr/local/sbin:/sbin:/usr/sbin:/bin:/usr/bin:/usr/bin/X11:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/root/bin"
– Mebatsion Sahle
                Apr 7, 2022 at 16:54