I created dir test, created a file 1.txt in the test. dir, wrote 'Before' in this file. then I went

cd .. 

used the command

tar-cvzf ./test.tgz ./test 

Then I entered the test dir again. Opened the 1.txt file again. Changed content to "After". I saved the file and changed chmod to read only by executing:

chmod -w ./1.txt 

So for now my 1.txt is read only. Then I go up

cd .. 

and extract the test.tgz archive.

tar-xvzf ./test.tgz 

Then I go again to test dir, do

cat 1.txt 

and get "Before".

Is not logical, that it happens  ,since the file was set to be read-only. Why does it happen?

I created directory test, created file 1.txt in test, wrote 'Before' in this file. Then I went

cd .. 

and used the command:

tar -cvzf ./test.tgz ./test 

Then I entered the test dir again. Opened the 1.txt file again. Changed content to "After". I saved the file and changed chmod to read only by executing:

chmod -w ./1.txt 

So for now my 1.txt is read only. Then I go up

cd .. 

and extract the test.tgz archive.

tar -xvzf ./test.tgz 

Then I go again to test dir, do

cat 1.txt 

and get "Before".

It is not logical that this happens, since the file was set to be read-only. Why does it happen?