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// Solution from:
// https://users.rust-lang.org/t/30856/5
use std::collections::{HashMap, hash_map::Entry};
use std::cmp::Eq;
use std::hash::Hash;
use std::thread::sleep;
use std::time::Duration;
struct Cacher<T, U, V>
where T: Fn(&U) -> V, U: Eq + Hash {
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@alexkuang0
alexkuang0 / extract.sh
Created April 27, 2022 05:52
Extract audios from all videos in a directory
# assume that all videos in the directory are of the same codec
# first choose one of the videos to see the codec of audio
ffprobe xxx.mp4
# batch convert (in this example: mp4 -> aac)
for i in *.mp4; do ffmpeg -i "$i" -vn -acodec copy "${i%.*}.aac"; done
while read -r ip_range do
ufw deny from $ip_range
done < ip_ranges.txt