I just confused to create file with sudo command. As i know, sudo command is commonly used for root privilege(by default) and when i created files using command below:
sudo cat > root.txt
And i saw the user, it still regular username not root. How that can be happen? and how to create files owned by root without changing user to root?
Stream redirection (> file) takes place in the parent process (running as $USER) before the command (sudo) even begins.
You can either use a different command:
sudo tee root.txt
or, afterwards, change the ownership of the file:
sudo chown root:root root.txt
Redirection is 'outside' of sudo in your example. Try
sudo bash -c "cat > root.txt"
