cpubar

dead simple per-core cpu load bars. single c file, no deps. made this bc i kept sshing into boxes and wanting a quick "is the cpu melting rn" without installing htop.

works on macos + linux.

$ cpubar
core 0  ▇▇▇▇▇▇▇▇▇░░░░░░░░░░░  42%
core 1  ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇░░░░  82%
core 2  ▇▇▇░░░░░░░░░░░░░░░░░  15%
core 3  ▇▇▇▇▇▇▇▇▇▇▇▇░░░░░░░░  58%
(ctrl+c to quit)

install

make && sudo make install

that puts it in /usr/local/bin/cpubar. override w/ PREFIX=... if u want.

uninstall:

sudo make uninstall

usage

cpubar                 # once per second, forever
cpubar -i 0.5          # refresh every half second
cpubar -n 5            # print 5 frames then exit
cpubar -w 40           # wider bars
cpubar --help
cpubar --version

how it works

• on macos it calls host_processor_info from mach
• on linux it reads /proc/stat
• diffs consecutive samples to get a % per core. standard stuff

dev

make            # build
make test       # smoke tests
make clean

tested on apple clang 17 and gcc on ubuntu. compiles clean w/ -Wall -Wextra -Werror.

license

MIT, see LICENSE