Hidden files are a standard feature in Linux. Some applications save configuration files and other data in hidden files or folders that aren't visible by default. Fortunately, Linux makes working ...

For decades, Linux users have been renaming files with the mv command ... ls *.new report.new schedule.new stats.new this.new $ rename 's/new/old/' *.new $ ls *.old report.old schedule.old ...

Schedule a shutdown for 2 minutes ... line and the comment near the top of the file, you can see that run state 5 — at least on this particular Linux system — represents multi-user mode ...