Ubuntu: convert an MKV to AVI

Meisha, just like me, is a fan of Tom and Jerry. I have a good collection of Tom and Jerry videos. The only problem was all those videos are in mkv format and she had to open her laptop to watch those videos every time. I realised the need to convert all of those videos to avi format so that they can be played from the TV. Wrote a bash script to do the conversion for me. Used xargs for parallel processing; ultimately there is a good number of videos and time is precious. That’s all. Check out here, if you have any requirement of such conversion.
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More: Array Subset, loop and xargs

Last week I had a requirement to fetch details of some records. For simplicity let’s assume records are id of some entity; I need to get details from an API for those id. Let’s also assume that API accepts 100 id at maximum in a single request. I’d almost 1 million id to fetch details.
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