Execute program at specified time period in Windows Task Scheduler.

Jul 4, 2021#batch #windows80

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This is a guide on how to execute a specific program within a specified time range using Windows Task Scheduler. The Task Scheduler in Windows does not support setting specific time intervals like cron jobs, but there are two methods provided in the guide to achieve the desired result. Method 1 involves using a Bootstrap program to determine the current time and decide whether to continue executing the task. Method 2 suggests setting multiple daily triggers at the desired hour.

A simple requirement is to set up a task scheduler on a Windows server to execute a specific program within a specified time period from 9:00 to 15:00. However, unlike crontab, Windows task scheduler does not support setting a specific time range and can only be set to start once every hour.

Method 1: Launch the Bootstrap program and determine whether to continue executing the task based on the current time.

Get the current time as a string.

SET curr_time=%TIME:~0,-5%
SET curr_time_str=%curr_time::=%

After obtaining the time, use logical conditions to determine whether to go to execute the corresponding code.

Complete code:

@echo off
ECHO "Time Schedule Bootstrap"
SET curr_time=%TIME:~0,-5%
SET curr_time_str=%curr_time::=%
IF %curr_time_str% leq 0900 (GOTO time_cancel) ELSE (
IF %curr_time_str% leq 1500 (GOTO time_exec) ELSE (
GOTO time_cancel
)
)
exit 0

ECHO "Call CMD.exe"
CMD.exe
exit 0

ECHO "Canceled"
exit 10

Method 2: Set to start once a day at a specified hour, multiple settings are required, skipping this part here.