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Diffstat (limited to 'hwclock/README.hwclock')
| -rw-r--r-- | hwclock/README.hwclock | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/hwclock/README.hwclock b/hwclock/README.hwclock new file mode 100644 index 000000000..ba8bc44c3 --- /dev/null +++ b/hwclock/README.hwclock @@ -0,0 +1,27 @@ +Hwclock is a program that runs under Linux and sets and queries the +Hardware Clock, which is often called the Real Time Clock, RTC, or +CMOS clock. + +Sometimes, you need to install hwclock setuid root. If you want users +other than the superuser to be able to display the clock value using the +direct ISA I/O method, install it setuid root. If you have the /dev/rtc +interface on your system or are on a non-ISA system, there's probably +no need for users to use the direct ISA I/O method, so don't bother. + +To install setuid root, do something like this: + + chmod a=rx,u=s /sbin/hwclock + +In any case, hwclock will not allow you to set anything unless you have +the superuser _real_ uid. (This is restriction is not necessary if you +haven't installed setuid root, but it's there for now). + +You may want to preformat and/or compress the man page before installing. + +If you want to build hwclock, just cd to the source directory and invoke +make with no parameters. + +hwclock calls option processing routines in the libsshopt library, +which is part of Sverre H. Huseby's "shhopt" package. You +can find a more authoritative copy of this package on metalab +(ftp://metalab.unc.edu/pub/Linux/libs/shhopt-X.Y). |