How do i pause my shell script for a second before continuing. With the script running successfully, you can see that a 5 second delay was made after the sleep function. On the command line type sleep, a space, a number, and then press enter. Using sleep on the command line instructs bash to suspend processing for the duration you provided. Three time values will be displayed after executing the command. As you can guess from the name, its only function is to sleep. How can i use the linux sleep command to pause a bash script. How to pause a bash script with the linux sleep command. After that, i give sendmail a second break by calling the linux sleep command. I read somewhere that it can pause a bash shell script. However, as part of a script, it can be used in many ways. This article shows you how to use this bash shell command effectively. And thats it, this way, from the above steps, you can learn the sleep in bash script.
How do i pause for 5 seconds or 2 minutes in my bash shell script on a linux or unixlike systems. You can use sleep command to pause execution of shell scripts or commands for a given period on a linux or unix like systems. Linux sleep command is one of the simplest commands out there. This tutorial will help you to learn the use of sleep command by using different bash scripts. Counterintuitive perhaps, but a period of inactivity is sometimes just whats needed. The sleep command makes your linux computer do nothing.
Though you can use it in a shell directly, the sleep command is commonly used to introduce a delay in the execution of a bash script. The syntax is as follows for gnu bash sleep command. Writing your first shell script for linux tutorial duration. How do i prompt for yesnocancel input in a linux shell script. This tutorial shows you how to use sleep commands and its various options in bash scripts.
In other words, the sleep command pauses the execution of the next command for a given number of seconds the sleep command is useful when used within a bash shell script, for example, when retrying a failed operation or inside a loop in this tutorial, we will show you how to use the linux. Damit kann beispielsweise in shellskripten eine wartepause erzwungen werden. H ow do i pause for 5 seconds or 2 minutes in my bash shell script on a linux or unix like systems. If you ever want to insert a random sleeppause into a running script. I tell the sleep command to take a break for 10 seconds. Bash sleep command examples in linux linux handbook. In other words, it introduces a delay for a specified time. You need to use the sleep command to add delay for a specified amount of time. I want to write a bash script to run a timer for 30 seconds and, after 30 seconds, it should hold for the next 30 seconds and again that timer will start for next 30 seconds and continue the same. For example, you can use it to pause the script before retrying a command that failed the first time.
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