How to start a shell script in one minute later in linux?

bash

Solution

Simple. you want to use 'at' to schedule your job. and 'date' to calculate your moment in the future.

Example:

echo b.sh | at now + 1 minute

or:

echo b.sh | at -t `date -v+60S "+%Y%m%d%H%M%S"`

`-v+60S` adds 60 seconds to current time. You can control exactly how many seconds you want to add.

But usually, when people wants one program to launch a minute after the other, they are not 100% sure it will not take more or less than a minute. that's it. `b.sh` could be launched before `a.sh` is finished. or `a.sh` could have finished 30 seconds earlier than "planned" and b.sh could have started faster.

I would recommend a different model. Where `b.sh` is launched first. `a.sh` creates a temp file when it starts. execute is tasks and delete its temp file at the end. `b.sh` watch for the temp file to be created, then deleted. and start its tasks.

Problem

Original source