Learn how to evaluate XPath expressions using xmllint, XMLStarlet, and xidel
Kai Yuan has been a software developer for over 15 years. He builds enterprise Java applications in work. He has 20 years experience of Linux and is a big fan of the Vim editor. He is happy to help people at stackoverflow.com. He lives currently in Hamburg.
Here's what I've written (so far):
Have a look at how to use the sed command to process a literal string or shell variable.
Learn how to remove the first line from using sed, awk, and tail
Learn about each type of Vim register through examples
Learn several approaches to remove the lines that appear in file B from another file A
Learn different ways to remove the last n lines from an input file and the performance of those approaches
Learn how to split a file at given line numbers using head, tail, sed, and awk
Learn how to delete multiple files in one shot from the Linux command line
Learn how to call shell script functions from outside the shell script file
Learn a few ways to count repeated lines in a text file