Unix permissions control who can read, write or execute a file. You can limit it to the owner of the file, the group that owns it or the entire world. For security reasons, files and directories ...

One way to get a little more clarity on this is to look at the permissions with the stat command. The fourth line of stat’s output displays the file permissions both in octal and string format: $ stat ...

Is there a way to make a file "append only"? I've lost some logfiles that got overwritten when I wanted them just to be appended. I know with NTFS there are detailed permissions that can be set, but ...

Linux provides a number of ways to control who has access to your files and what kind of access they have. Keeping your files private from anyone but those with superuser (root) access is easy on ...