whiptail: to use the user interface Usereadto Get Input in Linux Thereadcommand takes an input from the user and stores it in a variable. read-p"Do you want to continue? (Y/y for Yes, any other key for No) "answercase$answerin[Yy]*)echo"Program continues...";break;;*)echo"Prog...
In Linux, weuse read command to take the user input. However sometimes, we may need totimeout the user input to automate the script executionin case no one is available. For this, we canuse timeout option of read command. Timeout User Input ### Timeout in 5 seconds if no input rec...
User Input in Bash As we already discussed, we need to use the keywordreadto take user input to the system. It’s a built-in keyword in Bash that reads the user input. In the example below, we will take a user input and provide the user with the output, including the user input....
For example, if you’re sending data from Host A to Host B, as shown in Figure 9-1, your bytes leave the application layer on Host A and travel through the transport and network layers on Host A; then they go down to the physical medium, across the medium, and up again through the...
The init program is a user-space program like any other program on the Linux system, and you’ll find it in /sbin along with many of the other system binaries. Its main purpose is to start and stop the essential service processes on the system, but newer versions have more responsibilitie...
Roberto has been a computer and software programming enthusiast for over 35 years. He is currently interested in hacking what he considers to be the ultimate hardware and software: our bodies and our minds. Roberto lives in Toronto, and when he is not studying and working with Linux and Ansib...
This chapter explores basic network applications—the clients and servers running in user space that reside at the application layer. Because this layer is at the top of the stack, close to end users, you may find this material more accessible than the material in Chapter 9. Indeed, you inte...
Find if an User has Sudo Privileges We know now how to find all sudo users in our Linux system. How to find whether a certain user has sudo privilege or not? It's easy to check individual user sudo access! If you want to check sudo access for a specific user, you can use thesudo...
A“LAMP” stack is a group of open source software that is typically installed together in order to enable a server to host dynamic websites and web apps written in PHP. This term is an acronym which represents theLinux operating system with theApache web server. The site data is...
Linux and Unix are very popular with programmers, not just due to the overwhelming array of tools and environments available but also because the system is exceptionally well documented and transparent. On a Linux machine, you don’t have to be a programmer to take advantage of development tools...