Setting invalid path

Setting invalid path may leads to crash the terminal commands / bash /

eg :-

bash: ls: command not found

bash: dircolors: command not found

Error on .bashrc

exporting a PATH with missing basic PATH configs: -

export PATH=$HOME/.cargo/bin

but required :$PATH at the end ,

export PATH=$HOME/.cargo/bin:$PATH

Fix By Following ( Debian 10)

Opened the .bashrc using text-editor and made the changes as above or alternatively you can comment out the recently added paths and
excecute the following :-

Note I excecuted in 2 terminal session and opend 3 rd terminal session for checking the all the commands is working now. I closed the following 2 terminal session by CTRL+C after checking few commands is working.

/usr/bin/find / -name ls 2> /dev/null

/usr/bin/grep -rn --color "export PATH" ~/. 2> /dev/null

Solution Source https://devconnected.com/command-not-found-in-bash-fixed/