Today, I Learned
2026
2025
- Use "sh -c" to supply multiple commands to "entr"
- Use "background=dark" in Vim
- Busybox includes a DHCP server ("udhcpd")
- FFmpeg can be used for batch lossless video cutting
- Use "find -exec" instead of "xargs"
- Use Ctrl+p, Ctrl+q to detach from containers
- Use "socat" for temporarily forwarding ports
- OpenSuperClone can clone failing rotational hard disks
- Use Shift+F10 to open a command prompt during Windows 11 setup
- Use FTP's "passive" mode when behind NAT
- retro-aim-server lets you use AOL Instant Messenger, ICQ, etc.
- FidoNet was a network of bulletin board systems
- Use "color-mix()" for computing colors in CSS
- Use "display: table" to render non-table HTML elements like tables
- Use ImageMagick's "mogrify" tool for converting iPhone photos to JPEG
- Use "--transform" to put files into subdirectory of a tarball
- Use BackstopJS to graphically compare HTML files
- Use ":read !" to insert the result of a shell command in Vim
- Use "VPATH" and ".PATH" for compiling subdirectory source files in Make
- Git commits have both an author and a committer
- Kolmogorov Complexity
- Get the path of commands using "realpath" and "which"
- Use "exuberant-ctags" for "go to definition" in Vim
- GDB has a built-in TUI mode with single key operation
- Difference between Vim's tabstop, softtabstop, and shiftwidth
- Early C only used the first few characters of function names
- Safari default styles finally support dark mode
- Kill unresponsive SSH sessions with "Enter, ~, ."
- Use "ssh-keygen -lf" to view SSH server fingerprint before connecting
- Use ":terminal" in Vim for a better integrated terminal
- Use "!" to invert criteria in the "find" command
- Automatically wrapping lines in Vim and Emacs
- Use ":set paste" when pasting into Vim