articles/awk.md: new article

articles/awk.md

@@ -0,0 +1,20 @@
+# AWK
+AWK is a programming language for text processing and extraction. It is a standard [Unix](unix.md) tool included in the [POSIX](posix.md)
+standard.
+
+## Implementations
+- [One True AWK](https://github.com/onetrueawk/awk): the reference AWK implementation as described in the official AWK reference manual,
+supports [Unicode](unicode.md) ([UTF-8](utf8.md)) and [CSV](csv.md).
+- GNU AWK (gawk): bloated, turns AWK into a full-blown programming language with supports for sockets and internationalization.
+- [BusyBox's] AWK: small, for embedded systems use.
+- goawk: implementation of AWK in [Go](go.md).
+- ...
+
+## Examples
+TODO
+
+## Resources
+- *The AWK Programming Language*: the official reference manual by Alfred Aho, Brian Kernighan and Peter Weinberger.
+
+## See Also
+- [Perl](perl.md)