convert image.png -fill "#333333" -colorize 100 image_output.png
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替换图片中所有颜色(透明保留)
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Category Archives: Linux
检查音频长度，转化为秒
AUDIO_FILE="./music.ogg"
AUDIO_DURATION=$(ffprobe -i $AUDIO_FILE -show_format -v quiet | sed -n 's/duration=//p')
AUDIO_DURATION=$(echo ${AUDIO_DURATION%.*})
最后一个行是去掉小数点，如果不用可以不去。[......]
diff如何忽略空格和空白字符
这两个参数都要打开：
diff -w -B ./file1 ./file2
- -B, --ignore-blank-lines ignore changes where lines are all blank
- -w, --ignore-all-space ignore all white space
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Ubuntu 22.04安装docker
1 移除旧版
sudo apt-get remove docker docker-engine docker.io containerd runc
2 设置repo
sudo apt-get install ca-certificates curl gnupg lsb-release
sudo mkdir -m 0755 -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg |[......]
如何找到含有字符串A同时不含字符串B的文件
find . -type f -name "*.c" \( -exec grep -q "A" {} \; ! -exec grep -q "B" {} \; \) -print
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