You may find yourself in a situation where you remember the content of a file but not its name. Linux offers various commands to help you find files based on specific text strings within them. By ...

The Linux ls command, with the -l option, shows a file's permissions at the beginning of each line. Trying to execute an image file produces a "Permission denied" error ...

The problem with that command is it’s not only going to search every directory in the hierarchy, it’ll also include directories (such as /proc) that most certainly won’t house your file.

The nano text editor has some really cool tricks up its sleeve. One that you probably weren’t aware of was the ability to execute commands and add the output of those commands into the file you ...

The most common use cases of sed include operations like selecting text, substituting text, modifying an original file, adding lines to text, or deleting lines from the text. It can be used from the ...

Finally, when you run an Linux shell script in an Ubuntu terminal window, you need to prepend a dot slash (./) to the file’s name. If you don’t, Ubuntu will look on the operating system’s PATH for ...