SPACEIO // LINUX Command of the Day #4

chmod 600: decide who can read your files

Who can read your files? On Linux, that's a setting.

chmod 600 file

What it does

chmod changes permissions. 600 means only the owner can read and write. 755 lets everyone read and run a file, but only the owner can change it.

A private key that anyone on the system can read is a security problem. SSH will even refuse to use a key with loose permissions.

Run ls -l on a file in your home folder. What are its permissions? Share what you found in the community.