Is there a way to write a Bash Script, that repeatedly keeps on running every X minutes?

Question

I'm making calls to an API, which is constantly fetching me data. There is a limited number of calls that I can make per 15 mins. Can I automate the whole process, and keep the script running for like 24 hours, which executes a certain command at the interval of 15 mins?

Answer 1

Usual alternatives:

a) use "cron" to trigger the script periodically.

b) finish the script with one "at" command, to reschedule it.

c) a never ending loop, as the loop in @VikasYadav answer. However, this solution has the problem of stop working after system restart or script crash. It should be complete with some "keep alive" configuration (/etc/inittab or similar).

Answer 2

You can use something like this:

while(true)
   do
   # write your bash command to fetch API response using GET api_endpoint_url
   sleep 15m
   done

I hope this might serve the purpose!

Answer 3

Edit your crontab with the following command:

# crontab -e

Add the following line at the end of crontab:

*/15 * * * * /path/to/your/command.sh

That will run your command every 15 minutes.