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Editorial Team
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Asked: 2026-06-16T01:01:27+00:00

UTS_RELEASE defines the kernel version in Linux. It’s defined in generated/utsrelease.h , which is

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UTS_RELEASE defines the kernel version in Linux. It’s defined in generated/utsrelease.h, which is created by the main Makefile like so:

# KERNELRELEASE can change from a few different places, meaning version.h
# needs to be updated, so this check is forced on all builds

uts_len := 64
define filechk_utsrelease.h
        if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
          echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
          exit 1;                                                         \
        fi;                                                               \
        (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
endef

I was wondering what UTS stands for, here?

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1 Answer

  1. Editorial Team

    I will do a bet : it comes from unix history age.
    Unix Time Sharing
    http://en.wikipedia.org/wiki/Time-sharing

    ( with another link to give more weight to my guess : http://www.linuxmisc.com/9-unix-programmer/515225795f89ebf5.htm )

    Additionally if you search for UTS on Wikipedia you’ll find this as evidence too:

    UTS is a three-letter abbreviation which may describe:

    • Time-sharing, known as Unix Time-sharing System (UTS) when abbreviated in the source code of many Unix-like operating systems
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