how many lines of code is the linux kernel
Linux kernel Version 3.10 of the Linux kernel, released in June 2013, contains 15,803,499 lines of code,[26] while the version 4.1, released in June 2015, has grown to over 19.5 million lines of code contributed by almost 14,000 programmers.[27]
Code of Federal Regulations The Code of Federal Regulations (CFR) is the codification of the general and permanent rules and regulations (sometimes called administrative law) published in the Federal Register by the executive departments and agencies of the federal government of the United States. The CFR is divided into 50 titles that represent broad areas subject to federal regulation.