基于安全或者其他方面的原因，在linux不想让ps显示指定的进程名称，实现方法如下。
git clone https://github.com/gianlucaborello/libprocesshider.git
cd libprocesshider/ && make all
cp libprocesshider.so /usr/local/lib/
echo /usr/local/lib/libprocesshider.so >> /etc/ld.so.preload
或
export LD_PRELOAD=/usr/local/lib/libprocesshider.so
让PS隐藏进程的原理就是利用 LD_PRELOAD 来实现系统函数的劫持。
由于ps依赖readdir系统调用，实现中就采用重写readdir实现的方法来达到隐藏linux进程的目的。
cd /etc/NetworkManager/system-connections
ls -lh
sudo cat [wifi-name].mconnection
[wifi-security]字段的psk即为密码
psk是Phase-shift keying的缩写，预共享密钥。
安装irrlicht-1.8.4.zip 的时候，提示下面的这个错误。
Irrlicht/CIrrDeviceLinux.h:33:10: fatal error: X11/extensions/xf86vmode.h: 没有那个文件或目录
33 | #include <X11/extensions/xf86vmode.h>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
解决办法：
apt-file search xf86vmode.h
libxxf86vm-dev: /usr/include/X11/extensions/xf86vmode.h
安装缺少的包：
sudo apt install libxxf86vm-dev
从github下载vcpkg源码包
git clone https://github.com/Microsoft/vcpkg.git
进入源码目录
cd vcpkg
执行./bootstrap-vcpkg.sh
./bootstrap-vcpkg.sh
编译好后，进行安装
./vcpkg integrate install
vcpkg创建软链接
sudo ln -s /home/const/vcpkg/vcpkg /usr/bin
vcpkg用法
vcpkg list输出：
ade:x64-linux 0.1.1f#1 ADE Framework is a graph construction, manipulat...
angle:x64-linux 2020-05-15#2 A conformant OpenGL ES implementation for Window...
assimp:x64-linux 5.0.1#4 The Open Asset import library
brotli:x64-linux 1.0.9#1 a generic-purpose lossless compression algorithm...
bzip2:x64-linux 1.0.8#1 bzip2 is a freely available, patent free, high-q...
curl:x64-linux 7.74.0#7 A library for transferring data with URLs
curl[non-http]:x64-linux Enables protocols beyond HTTP/HTTPS/HTTP2
curl[openssl]:x64-linux SSL support (OpenSSL)
curl[ssl]:x64-linux Default SSL backend
vcpkg search 用法
vcpkg search opencv4
输出：
vcpkg search opencv4
opencv4 4.5.2 computer vision library
opencv4[ade] graph api
opencv4[contrib] opencv_contrib module
opencv4[cuda] CUDA support for opencv
opencv4[dnn] Enable dnn module
opencv4[eigen] Eigen support for opencv
opencv4[ffmpeg] ffmpeg support for opencv
opencv4[gdcm] GDCM support for opencv
opencv4[halide] Halide support for opencv
opencv4[ipp] Enable Intel Integrated Performance Primitives
opencv4[jasper] JPEG 2000 support for opencv
opencv4[jpeg] JPEG support for opencv
opencv4[lapack] LAPACK support for opencv
opencv4[nonfree] allow nonfree and unredistributable libraries
opencv4[openexr] OpenEXR support for opencv
opencv4[opengl] opengl support for opencv
opencv4[openmp] Enable openmp support for opencv
opencv4[ovis] opencv_ovis module
opencv4[png] PNG support for opencv
opencv4[qt] Qt GUI support for opencv
opencv4[quirc] Enable QR code module
opencv4[sfm] opencv_sfm module
opencv4[tbb] Enable Intel Threading Building Blocks
opencv4[tiff] TIFF support for opencv
opencv4[vtk] vtk support for opencv
opencv4[webp] WebP support for opencv
opencv4[world] Compile to a single package support for opencv
错误描述：
go run .
go-OpenCV Example.
gocv version: 0.27.0
opencv lib version: 4.5.2
Gtk-Message: 16:11:20.464: Failed to load module "canberra-gtk-module"
解决办法：
sudo apt install libcanberra-gtk-module
验证解决
go run .
go-OpenCV Example.
gocv version: 0.27.0
opencv lib version: 4.5.2
^Csignal: interrupt