ffmpeg -ignore_loop 0 -i "ghostsaibu - 1774814925807894552.gif" -i "CHVRCHES - Deliverance (Official Instrumental).mp3" -vf "scale=trunc(iw/2)*4:trunc(ih/2)*4" -sws_flags neighbor -vcodec libx265 -preset medium -tune animation -acodec aac -b:a 192k  -shortest -t 00:00:30 video.mp4

another 101 way to make gif+sound=mp4

Determining processor & platform:

LD_SHOW_AUXV=1 $(which true) | grep _PLATFORM

Search all files for HEX pattern "E831" recursively in current dir:

ug  --all --hexdump -U 'E831' -r $(pwd)

Check installed packages with pacutils:

 paccheck --md5sum --quiet

Yes, the GCC oneliner

exec 5>$(mktemp) && printf "main(){write(1,\"haiiiiiiihelloooooohaiiiiiii\",29);}" | gcc -std=c89 -xc -o /dev/fd/5 - 2>/dev/null && /lib64/ld-linux-x86-64.so.2 /dev/fd/5

freaked interfaces №43

freaked interfaces №44

smol useful prog that will send to clipboard piped content

usage:

gcc -o cb cb.c $(pkg-config --cflags --libs gtk+-3.0) &&  chmod +x cb && sudo cp cb /usr/local/bin/

then

any command with output  | cb

example:

find /tmp | cb

Irregular alternative to heredoc cat using bare /dev/stdin:

cp /dev/stdin /tmp/plaintext.txt << EOF
some
multiline
text
test
test
EOF

A way to make a full disk backup of WIN* (NTFS partition):

backup:

~/trash $ cat save-image.sh 

ntfsclone --save-image -o - /dev/sdb1 | zstd -9 -o /run/media/host/old2.52/WIN8.1BKUPS/sdb1-DEFRAG-ACT-NVIDIA-OPTI-11AUG2021.img

restore:

~/trash $ cat restore-images.sh 

zstdcat /run/media/host/old2.52/WIN8.1BKUPS/SELEECT |ntfsclone --restore-image --overwrite /dev/SELEECT -

bash forkbomb not working there:

systemd-run --user --unit=safe-fork \
  --property=MemoryMax=1G \
  --property=CPUQuota=10% \
  --property=TasksMax=3 \
  --property=TimeoutSec=3 \
  --pty /bin/bash

best compression using ZPAQ

lrzip -z -L 9 -U  -p $(nproc) <file>

(its very slow, but compression ratio around 30% better than ZST )

ZST variant:

zstd --ultra -22 --long=16 -T$(nproc) -v storage.qcow2 -o storage_$(date +%Y%m%d)_.qcow2.zst


zstd --ultra -22 --long=16 -T$(nproc) -v system.qcow2 -o system_$(date +%Y%m%d)_.qcow2.zst

Get TUI weather from the Norway telnet service:

printf 'Kyiv\r\n' | nc graph.no 79

OR pure bash TCP ver:

exec 3<>/dev/tcp/graph.no/79
printf 'Kyiv\r\n' >&3
cat <&3
exec 3>&-

If it doesn't work, try different city names.
It looks like their backend is hitting bugs.
Internal server error.

freaked interfaces №45

calculate PI to 5000 decimal places:

time echo "scale=5000; 4*a(1)" | bc -l -q

same for Euler (exponential func):

time echo "scale=5000; e(1)" | bc -l -q

The SSH protocol