Thanks. Yes I have the problem with my simplified script (both samples) in the ISE/WMF 5.0 on Windows 10. This tutorial covers the basics of while loops shell script to run a command every 5 minutes using bash while loop. From man bash:. The -r option to read command disables backslash escaping (e.g., \n, \t). IFS is used to set field separator (default is while space). bash while duration. It is the best tool to use when you need to execute a set of statements repeated based on a condition. Because SECONDS is an internal variable in bash. The while loop enables you to execute a set of commands repeatedly until some condition occurs. shell for loop. Top Forums Shell Programming and Scripting while loop and delay # 1 06-22-2007 asadlone. It is usually used when you need to manipulate the value of a variable repeatedly. Syntax while command do Statement(s) to be executed if command is true done Here the Shell command is evaluated. Thanks, Michael. Sometimes you will need to pause execution for a specific period within a shell script. The while loop in shell scripts is a key weapon in every shell programmer’s arsenal. In scripting languages such as Bash, loops are useful for automating repetitive tasks. Last Activity: 3 June 2010, 7:13 AM EDT. Typically, you’d do this to allow some process sufficient time to complete before the script continues its processing. It stores the amount of time that the shell has been running. You can use the sleep command in shell scripts to pause execution of the script for a precise amount of time. There are three basic loop constructs in Bash scripting, for loop, while loop, and until loop. SECONDS Each time this parameter is referenced, the number of seconds since shell invocation is returned. Join Date: Jun 2007. run bash script timer. Registered User. I don’t understand what makes the infinate while loop get terminated in the yes_or_no() function. This is for checking whether my internet connection has “recovered” after suspend/hibernate. while loop a function and sleep to run for 15 minutes. Following is the syntax of bash sleep : SUFFIX is optional and can be : s – seconds m – minutes h – hours d – days When no SUFFIX is provided, by default, the NUMBER is considered to be seconds. Loops are handy when you want to run a series of commands a number of times until a particular condition is met. Bash Sleep Command Bash Sleep command is used to insert a delay or pause the execution for a specified period of time. Moving Start-Sleep -Seconds 10 outside the While loops above is no use either as it’s ignored and the loop continiously cycles. Some of the examples are : sleep 45s sleep 2m sleep 9h sleep 2d … Participant. Matt Bloomfield. 44, 0. Using Sleep to Pause Execution of a Script. 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