Site · map14 pages
Sitemap: every guide, tool and site page on the TobsCore line map
The whole site on one page, grouped by line like the districts on the home page. Each entry carries the summary from its own page, so the right guide can be picked without opening five tabs.
Guides are the long pages with tested code, a route of stations at the top and questions at the end. Tools are the converters and the Vim game, which run in the browser and send nothing to a server. The site pages explain who writes the notes, how to report an error, how data is handled and how AI-generated pictures are labeled. A machine-readable version of this list lives at /sitemap.xml.
C & Networking
- Byte order converterByte order converter for 16- and 32-bit values with htons and htonl in C. Port 8080 sent without htons arrives as 36895; check your own CPU in one line.
- IEEE 754 converterIEEE 754 converter for float and double: click 32 bits, read sign, exponent and mantissa, and see why 0.1f is stored as 0.100000001490116119384765625.
- Socket programming in C, step by stepSocket programming in C with getaddrinfo, bind, accept and connect, a recv() loop for partial reads and poll() for several clients, all tested on gcc 14.4.
Git
- Githug levels and solutionsGithug turns Git into 56 terminal levels, from git init to bisect. Tested solutions for each level, plus the File.exists? crash on Ruby 3.2 and newer.
Vim
- The Vim text editorThe Vim text editor explained: the four modes, normal mode commands like dw and ci", search and replace, a tested .vimrc, and all the ways to exit Vim.
- Vim trainer gameA browser Vim trainer game: move with h j k l, w, b, 0, $, gg and G, delete the marked character with x and score as many hits as you can in 30 seconds.
Linux CLI
- How to GPG encrypt file contents and whole folders on Linuxgpg -c encrypts a file with AES256 by default in GnuPG 2.4. Covers folders via tar, decryption, the gpg-agent passphrase cache and safe batch scripts.
- Set up an SSH config alias for every host in ~/.ssh/configAn ssh config alias turns ssh -p 2222 [email protected] into ssh web. Host blocks, IdentityFile, two GitHub keys, ProxyJump, first match wins, ssh -G.
WordPress
- Romangie themeThe Romangie theme reviewed: a free Bootstrap 3 WordPress theme from 2013 with nine post formats, four widget areas and German and Polish translations.
Site pages
- HomeThe line map, the districts and the browser tools.
- About TobsCoreAbout TobsCore: notes on C sockets, Git, Vim, the Linux command line and WordPress, with every example tested on the exact versions listed on the page.
- AI-generated content noticeAI-generated content notice for TobsCore: which images are AI-made and how they are marked, how text is reviewed, and how every code listing is tested.
- Contact TobsCoreContact TobsCore at [email protected]: what to include in an error report (the URL, command, output, versions) and how confirmed errors get corrected.
- Privacy policyTobsCore privacy policy: no cookies, analytics or ads, fonts served from this site, browser tools that send nothing, and server logs deleted when unneeded.