How to View the Contents of a Tar File
If you have ever received a tar file as an email attachment or downloaded one from the internet, you may have wondered what it is and how to open it. … Read more
Linux
How to Fix “-bash: ng: command not found”
If you are receiving the error message “-bash: ng: command not found” then it is likely that your package manager has failed to install one of the required packages. This … Read more
Fix: Sudo Command Not Found
The sudo command is used to execute applications with root privileges. Sometimes, when trying to use the sudo command, it will give an error message that says sudo: command not … Read more
[Solved] wget is not recognized as an internal or external command
You’re trying to use the command-line tool wget to download a web page, image, video, etc., but you’re getting an error saying that wget is not recognized as an internal … Read more
Bash Concatenate Strings
When you need to combine two strings in Bash, there are a few different ways to do it. We will go over all of the options so that you know … Read more
Sudo: No Tty Present And No Askpass Program Specified
“sudo no tty present and no askpass program specified” is an error message that appears when you try to run the “sudo” command in a non-interactive environment. The “sudo” command … Read more
Bash Split String Examples
In bash scripting, due to the lack of any built-in string function, it is exceptionally challenging for a programmer to split the string data in bash. It requires the usage … Read more
What Would You Enter At The Command Prompt To Start A New Bourne-Again Shell (Bash) Session
The answer is bash. The bash command opens a new Bourne Again Shell (bash) session. What is Bash? Bash is an acronym for Bourne Again Shell. It is a Unix … Read more
What is /dev/shm and What is it Used For?
/dev/shm is shared memory. It is offered in Linux as a way for memory to be accessed simultaneously by multiple programs.
shm is also known as tempfs or temporary file storage. On Linux it will appear as a mounted file system that you can access directly. Instead of writing to a permanent storage device such as your hard drive, it writes to virtual memory (i.e., it lives in RAM). Since it is memory, anything written to this file system will be removed the next time you reboot.