pdfseperate: A tool than can be used to split a pdf document into individual pages or can be used to extract a set of pages as individual pages from a pdf document.
Let us say we have a document named hello.pdf, that has 100 pages and we need to extract the pages 20 to 22 as individual pages. We can use pdfseperate to achieve this.
After the execution of the command, we should have three files foo1.pdf,foo2.pdf and foo3.pdf which will be the 20th,21st and 22nd page of the hello.pdf document.
If pdfseperate is not available, we need to install the package poppler-utils, for debian based systems