In the previous examples, we explicitly listed the values to be iterated by thefor loop, which works just fine. However, you can only imagine how cumbersome and time-consuming a task it would be if you were to
Shell scripting, specifically Bash scripting, is a great way to automate repetitive or tedious tasks on your systems. Why type when you can schedule and run ...
Theforloop is the looping structure that is particularly used when a certain statement(s) or set of commands needs to be executed a specified number of times. We can also use theforloop in the bash prompt and the Bash script. The Bash script provides two syntaxes for writing theforloops...
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...
Learn how to create a For-Loop in VHDL. The For-loop is the best loop to use when you need to iterate over something a fixed number of times.
In bash for, while, and until are three loop constructs. In this short article, you will learn how to use until loop in your shell scripts.
How to Use a for Loop in Python In this tutorial, we will take you through several different ways you can use a for loop in Python. If you ever need to process large data sets, you will likely need to use either a for loop or a while loop. So, it is essential that you have a...
Bash for Loop to Create a Conditional Exit With Break Loop In addition to the three-expression structure, usefor-into automatically stop the loop when the script operation meets a specific condition. Here’s the code syntax: for i in 1 2 3 4 5 do if [condition] then break fi statement...
In this section, you will create your first programming loop in Java using thewhilekeyword. You’ll use a singleintvariable to control the loop. Theintvariable will be calledxand will have an initial value of3. While, or as long as,xis bigger than0, the loop will continue executing a...
(1) manual page for more information. Finally, the utility nm-online will tell you whether the network is up or down. If the network is up, the command returns zero as its exit code; it’s nonzero otherwise. (For more on how to use an exit code in a shell script, see Chapter ...