Meaning of . and .. directories in linux [duplicate]

The . is same as saying "current directory". So ./script means execute script file in current directory.
The .. is same as saying "parent directory" (one directory up).

Also, if you are in / directory, there is no difference between:

/Document/myscript/script

and

./Document/myscript/script

So when you use the dot (. or ..), the path you provide is relative to current\parent directory you are in.

If you use full path, then the path is absolute path to the file.

Related