what is path in linux code example

Example 1: linux add to path

export PATH=$PATH:/place/with/the/file

Example 2: linux show path

pwd		//Unix command for showing the path
$PATH  //Enviromental variable for showing the path

Example 3: linux file path

readlink -f file.txt

Example 4: how to find the path of a command in linux

which python
which -a pyton