Navi: Update cheats
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@ -1,6 +1,8 @@
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; TODO: More ffmpeg, yt-dlp
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; ===========================
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; NIXOS
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; ===========================
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% nixos, nixos-rebuild
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% nixos, nixos-rebuild, flake
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# Rebuild a flake system derivation
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# Rebuild a flake system derivation
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sudo nixos-rebuild <type> --flake .#<flake>
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sudo nixos-rebuild <type> --flake .#<flake>
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$ type: echo -e "switch\nbuild\nboot"
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$ type: echo -e "switch\nbuild\nboot"
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@ -10,99 +12,97 @@ $ flake: echo -e "nixinator\nnixtop"
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# Find out why a package is included in the closure when building the system derivation
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# Find out why a package is included in the closure when building the system derivation
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nix why-depends /run/current-system nixpkgs#<package>
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nix why-depends /run/current-system nixpkgs#<package>
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; TODO: Autocomplete executable, list everything in path
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% nixos, nix-store, storepath, link
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% nixos, nix-store, storepath, link
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# Find the storepath of an executable in the users path
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# Find the storepath of an executable in the users path
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readlink -f $(which <executable>)
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readlink -f $(which <executable>)
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$ executable: bash -c "compgen -c"
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; TODO: Autocomplete executable, list everything in path
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% nixos, nix-store, storepath, libraries
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% nixos, nix-store, storepath, libraries
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# Find the wanted dynamic libraries of an executable in the users path
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# Find the wanted dynamic libraries of an executable in the users path
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ldd $(readlink -f $(which <executable>))
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ldd $(readlink -f $(which <executable>))
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$ executable: bash -c "compgen -c"
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; ===========================
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; SHELL
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; ===========================
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% shell, process
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% shell, process
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# Launch a detached process with suppressed output
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# Launch a detached process with suppressed output
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<command> &>/dev/null &
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<command> &>/dev/null &; disown
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; TODO: Filter out directories from input autocomplete (if there are no directories basic grep doesn't work, always needs a pattern)
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% ffmpeg, slowmo
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# Create a slow motion version of a video with interpolated/blended frames
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ffmpeg -i "<input>" -filter:v "minterpolate='mi_mode=mci:mc_mode=aobmc:vsbmc=1:fps=<doublefps>',setpts=2*PTS" output.mp4
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$ input: eza -1
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% ffmpeg, cropdetect
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# Detect black bar dimensions automatically by looking at the first 10 frames
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ffmpeg -i "<input>" -vframes 10 -vf cropdetect -f null -
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$ input: eza -1
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% ffmpeg, cropdetect, preview
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# Preview video with applied crop settings
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ffplay -vf crop=<width>:<height>:<x>:<y> "<input>"
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$ input: eza -1
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% ffmpeg, cropdetect, render
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# Re-encode the video with applied crop settings
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ffmpeg -i "<input>" -vf crop=<width>:<height>:<x>:<y> -c:a copy output.mp4
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$ input: eza -1
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% ffmpeg, video compression, h265, render, reencode
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# Reencode and compress the video using the h265 codec
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ffmpeg -i "<input>" -vcodec libx265 -crf <quality> "out_<input>"
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$ input: eza -1
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$ quality: echo -e "24\n25\n26\n27\n28\n29\n30\n"
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; TODO: Setting the default values like this makes them the only possible values
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% ffmpeg, video compression, h256, render, reencode
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# Reencode and compress multiple videos using the h265 codec
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fish -c "for name in <files>; ffmpeg -i '$name' -vcodec libx265 -crf <quality> 'out_$name'; end"
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$ files: echo "(eza -1 | grep \".mp4\")"
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$ quality: echo "28"
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% qemu, cpu
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# Find out what features are supported by different qemu CPUs
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qemu-system-<arch> -cpu help
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; https://github.com/flathub/com.discordapp.Discord/wiki/Rich-Precense-(discord-rpc)
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% discord, flatpak, rich-presence
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# Enable rich presence for flatpak Discord
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ln -sf $XDG_RUNTIME_DIR/{app/com.discordapp.Discord,}/discord-ipc-0
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% find
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# Find files under a certain size in the current directory
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find . -type f -name "<glob>" -size -<size>
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% objdump, disassemble
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# Disassemble an object file
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objdump -d -S -M intel "<file>" | bat -l nasm
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$ file: eza -1
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% pdftocairo, pdf, svg
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# Extract svg figure from pdf page
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pdftocairo -f <page> -l <page> -svg "<input>" "<output>"
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$ input: eza -1
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% yes, head, file
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% yes, head, file
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# Generate a large text file
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# Generate a large text file
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yes "The quick brown fox jumps over the lazy dog" | head -c <size> > <output>
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yes "The quick brown fox jumps over the lazy dog" | head -c <size> > <output>
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% hotspot, create_ap, wifi, wihotspot
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# Open a WiFi Hotspot using "wihotspot"
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sudo create_ap wlp5s0 enp0s31f6 Potshot ThisIsMyPotshot --daemon --hidden
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% hotspot, create_ap, wifi, wihotspot
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# List running Hotspots
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sudo create_ap --list-running
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% hotspot, create_ap, wifi, wihotspot
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# List connected devices
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watch -d -c -n 0.5 sudo create_ap --list-clients <SSID>
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$ SSID: sudo create_ap --list-running | sd '.+\((.+)\)' '$1'
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% hotspot, create_ap, wifi, wihotspot
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# Stop a running hotspot
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sudo create_ap --stop <SSID>
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$ SSID: sudo create_ap --list-running | sd '.+\((.+)\)' '$1'
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% fish, for, loop
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% fish, for, loop
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# For-loop in fish shell
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# For-loop in fish shell
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for o in <objects>; <action>; end
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for o in <objects>; <action>; end
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% find
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# Find files under a certain size in the current directory
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find . -type f -name "<glob>" -size -<size>
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; ===========================
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; CODING
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; ===========================
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% objdump, disassemble
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# Disassemble an object file
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objdump -d -S -M intel "<file>" | bat -l nasm
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$ file: eza -f -1
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; ===========================
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; DOCUMENTS
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; ===========================
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% pdftocairo, pdf, svg
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# Extract svg figure from pdf page
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pdftocairo -f <page> -l <page> -svg "<input>" "<output>"
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$ input: eza -f -1
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; ===========================
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; YT-DLP
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; ===========================
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% yt-dlp, mp4
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# Download mp4 video in best quality
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yt-dlp -f 'bv*[ext=mp4]+ba[ext=m4a]/b[ext=mp4] / bv*+ba/b' --recode-video mp4 "<url>"
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% yt-dlp, mp3
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# Download mp3 video in best quality
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yt-dlp -f 'ba' --extract-audio --audio-format mp3 "<url>"
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; ===========================
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; FFMPEG
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; ===========================
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% ffmpeg, slowmo
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# Create a slow motion version of a video with interpolated/blended frames
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ffmpeg -i "<input>" -filter:v "minterpolate='mi_mode=mci:mc_mode=aobmc:vsbmc=1:fps=<doublefps>',setpts=2*PTS" output.mp4
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$ input: eza -f -1
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% ffmpeg, cropdetect
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# Detect black bar dimensions automatically by looking at the first 10 frames
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ffmpeg -i "<input>" -vframes 10 -vf cropdetect -f null -
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$ input: eza -f -1
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% ffmpeg, cropdetect, preview
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# Preview video with applied crop settings
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ffplay -vf crop=<width>:<height>:<x>:<y> "<input>"
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$ input: eza -f -1
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% ffmpeg, cropdetect, render
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# Re-encode the video with applied crop settings
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ffmpeg -i "<input>" -vf crop=<width>:<height>:<x>:<y> -c:a copy output.mp4
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$ input: eza -f -1
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% ffmpeg, video compression, h265, render, reencode
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# Reencode and compress the video using the h265 codec
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ffmpeg -i "<input>" -vcodec libx265 -crf <quality> "out_<input>"
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$ input: eza -f -1
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$ quality: echo -e "24\n25\n26\n27\n28\n29\n30\n"
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% ffmpeg, video compression, h256, render, reencode
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# Reencode and compress multiple videos using the h265 codec
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fish -c "for name in <files>; ffmpeg -i '$name' -vcodec libx265 -crf <quality> 'out_$name'; end"
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$ quality: echo -e "24\n25\n26\n27\n28\n29\n30\n"
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