Z:gnu-www-ja-thegnuproject--1713b6-Fortunately, another kernel is/en

Fortunately, another kernel is available. In 1991, Linus Torvalds developed a Unix-compatible kernel and called it Linux. It was proprietary at first, but in 1992, he made it free software; combining Linux with the not-quite-complete GNU system resulted in a complete free operating system. (Combining them was a substantial job in itself, of course.) It is due to Linux that we can actually run a version of the GNU system today.