How to change extension of multiple files in Linux?

When files are in same folder:

rename 's/.abc$/.edefg/' *.abc


Recursively rename files:

# Bash
# Also requires GNU or BSD find(1)
# Recursively change all *.foo files to *.bar

find . -type f -name '*.foo' -print0 | while IFS= read -r -d '' f; do
mv -- "$f" "${f%.foo}.bar"
done



From:
http://askubuntu.com/questions/35922/how-to-change-extension-of-multiple-files-from-command-line

Also see:

http://mywiki.wooledge.org/BashFAQ/030

@RetryOnFailure annotation using Aspect from JCABI library

Use this annotation to make repeated calls on failure for an idempotent method

http://www.jcabi.com/jcabi-aspects/annotation-retryonfailure.html

Validate user-inputted URLs using Google Safe Browsing API

Use this API to get a database of URLs from Google and verify them
locally. They also have an earlier version of the API but you need to
make a remote call. This is better as the client is the only one that
knows about the URLs it is verifying.

https://developers.google.com/safe-browsing/developers_guide_v2

Notes: Example of image data embedded in HTML

This is a div that appears on the Onion above an article when you've
reached 5 articles already, asking you to subscribe. The image
information is embedded in base64 on the div itself.


<div style="background-image:
url(data:image/png;base64,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%3D%3D);
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Java: (Spring) Getting subset of a list for paged display

PagedListHolder - one of those Spring classes that you wish you've
been using for the past 10 years

Given a
1. list of items
2. page number and
3. number of items per page

Return the part of the list to be displayed on the page


PagedListHolder<PopularSearch> pagedListHolder = new
PagedListHolder<PopularSearch>(sourceList);
pagedListHolder.setPage(pageNumber);
pagedListHolder.setPageSize(itemCountPerPage);

List<PopularSearch> tmp = pagedListHolder.getPageList();