https://github.com/jaseg/lolcat
High-performance implementation of https://github.com/busyloop/lolcat
https://github.com/jaseg/lolcat
Last synced: 11 months ago
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High-performance implementation of https://github.com/busyloop/lolcat
- Host: GitHub
- URL: https://github.com/jaseg/lolcat
- Owner: jaseg
- License: other
- Created: 2014-10-24T09:12:12.000Z (over 11 years ago)
- Default Branch: main
- Last Pushed: 2024-12-24T10:47:30.000Z (over 1 year ago)
- Last Synced: 2025-05-15T23:02:22.764Z (11 months ago)
- Language: C
- Homepage:
- Size: 1.71 MB
- Stars: 380
- Watchers: 10
- Forks: 46
- Open Issues: 9
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-systools - lolcat - performance implementation of lolcat (Fun / RFID)
README
# What?
## Screenshot
## Installation
### Archlinux
There's an [AUR package](https://aur.archlinux.org/packages/c-lolcat):
```bash
$ git clone https://aur.archlinux.org/packages/c-lolcat
$ cd c-lolcat
$ makepkg -csi
```
### Fedora ###
```bash
$ dnf install lolcat
```
### Ubuntu (Snap)
See [this awesome blog post by a kind person from the internet](https://blog.simos.info/how-to-make-a-snap-package-for-lolcat-with-snapcraft-on-ubuntu/):
```bash
$ snap install lolcat-c
```
### Mac
Build loclcat with:
```
$ make lolcat
```
...and put the resulting binary at a place of your choice.
### Others
Note: Debian users may need the `python-is-python3` package.
```bash
$ make && sudo make install
```
## Why?
This `lolcat` clone is an attempt to reduce the world's carbon dioxide emissions by optimizing inefficient code. It's >10x as fast and <0.1% as large as the original one.
```bash
newton~/d/lolcat <3 dmesg>foo
newton~/d/lolcat <3 time upstream/bin/lolcat foo
13.51user 1.34system 0:15.99elapsed 92%CPU (0avgtext+0avgdata 10864maxresident)k
0inputs+0outputs (0major+1716minor)pagefaults 0swaps
newton~/d/lolcat <3 time ./lolcat foo
0.02user 0.00system 0:00.09elapsed 34%CPU (0avgtext+0avgdata 1936maxresident)k
0inputs+0outputs (0major+117minor)pagefaults 0swaps
```
Bonus comparison with [python-lolcat](https://github.com/tehmaze/lolcat/):
```bash
newton~/d/lolcat <3 dmesg>foo
$ time python-lolcat foo
12.27user 0.00system 0:12.29elapsed 99%CPU (0avgtext+0avgdata 11484maxresident)k
0inputs+0outputs (0major+1627minor)pagefaults 0swaps
$ time c-lolcat foo
0.29user 0.00system 0:00.30elapsed 98%CPU (0avgtext+0avgdata 468maxresident)k
0inputs+0outputs (0major+21minor)pagefaults 0swaps
```
(Read: ```c-lolcat << python-lolcat << ruby-lolcat```)