$ watch grep MHz /proc/cpuinfo

[1]+  Stopped                 watch grep MHz /proc/cpuinfo
[realeyes@se7en ~]$ powertop
bash: powertop: command not found
[realeyes@se7en ~]$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
cat: /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor: No such file or directory
[realeyes@se7en ~]$ sudo pacman -S cpufreq
Password:
error: target not found: cpufreq
[realeyes@se7en ~]$ sudo pacman -S cpufreq-utils
error: target not found: cpufreq-utils
[realeyes@se7en ~]$ sudo pacman -S powertop
resolving dependencies...
looking for inter-conflicts...

Targets (1): powertop-1.13-2

Total Download Size:    0.06 MB
Total Installed Size:   0.48 MB

Proceed with installation? [Y/n] y
:: Retrieving packages from community...
 powertop-1.13-2-x86_64                       66.0K  265.7K/s 00:00:00 [#######################################] 100%
(1/1) checking package integrity                                       [#######################################] 100%
(1/1) checking for file conflicts                                      [#######################################] 100%
(1/1) installing powertop                                              [#######################################] 100%
[realeyes@se7en ~]$ sudo pacman -S cpufrequtils
resolving dependencies...
looking for inter-conflicts...

Targets (1): cpufrequtils-008-1

Total Download Size:    0.03 MB
Total Installed Size:   0.23 MB

Proceed with installation? [Y/n] y
:: Retrieving packages from extra...
 cpufrequtils-008-1-x86_64                    29.6K  206.5K/s 00:00:00 [#######################################] 100%
(1/1) checking package integrity                                       [#######################################] 100%
(1/1) checking for file conflicts                                      [#######################################] 100%
(1/1) installing cpufrequtils                                          [#######################################] 100%
[realeyes@se7en ~]$ ls /lib/modules/$(uname -r)/kernel/arch/x86/kernel/cpu/cpufreq/
acpi-cpufreq.ko.gz  mperf.ko.gz  p4-clockmod.ko.gz  pcc-cpufreq.ko.gz  powernow-k8.ko.gz  speedstep-lib.ko.gz
[realeyes@se7en ~]$