Elasticsearch Essentials
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The Complete Plato
Plato
Effective Perl Programming: Ways to Write Better, More Idiomatic ...
Joseph N. Hall & Joshua McAdams & Brian D. Foy
Mastering Python Regular Expressions
Félix López & Victor Romero
Shell Scripting
Steve Parker
Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt