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+0,stable diffusion
+图片尺寸很重要: 使用stablediffusion2.1_768_ema_pruned模型，当尺寸为768x512时，生成的图片像是有很多噪点一样，切换为768x768尺寸后，马上改善。
+进一步测试，发现：只要宽或高设置不是768x768，它就画不好了。
+然后，再搜索引擎找了一下说明，果然：Stable Diffusion 2.0 and 2.1 require both a model and a configuration file, and the image width & height will need to be set to 768 or higher when generating images...
+
+
+
+(white background:1.1),mid_shot,(bust:1.1),upper_body,realistic,front portrait of a man,30 years old,deep_skin,(square face:1.1),(silver hair:1.1),cocked eyebrow,blue eyes,big nose,thick lips,grin,teeth,long hair,in summer,blue t-shirt,
+
+(illustration of a boy riding bike:1.2),white_background,outline,
+
+0, 
+123.60.67.167
+
+1, find oldones/ -type f -name 'a*' -delete
+
+
+2,
+scp -r local_path/ [email protected]:/remote_path/
+Ctrl+z
+bg
+
+然而，使用高性能文件传输工具rsync是一个更好的选择。
+rsync -aPz sourcefolder/ [email protected]:/root/destinationfolder/
+
+
+3, 多个python版本共存/自由切换
+https://github.com/pyenv/pyenv?tab=readme-ov-file#usage
+pyenv install 3.10.4
+
+配置环境变量（根据自己系统，PYENV_ROOT路径可能不同）
+export PYENV_ROOT=/usr/local/Cellar/pyenv/2.4.13/
+export PATH="$PYENV_ROOT/bin:$PATH"
+if which pyenv > /dev/null; then eval "$(pyenv init -)"; fi
+
+
+
+Switch between Python versions
+To select a Pyenv-installed Python as the version to use, run one of the following commands:
+
+pyenv shell <version> -- select just for current shell session
+pyenv local <version> -- automatically select whenever you are in the current directory (or its subdirectories)
+pyenv global <version> -- select globally for your user account
+
+
+pyenv versions
+
+
+
+4, nvm
+
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
+
+Close and reopen your terminal to start using nvm or run the following to use it now:
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
+[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
+
+nvm install 20.0.0
+
+nvm list
+
+5, du -h 显示目录占用空间大小情况
+如果显示太多，使用 --max-depth=1 控制显示的层级数，非常的方便好用
+
+
+6,
+Argument list too long error for rm, cp, mv commands
+
+解决：
+例子，
+删除： find . -name "*.pdf" -print0 | xargs -0 rm
+移动： find . -type f -name '*.mp3' -exec mv {} ../pron/ \;
+
+
+
+7, 
+tar 压缩加密
+tar -czvf - path2folder/ | openssl des3 -salt -k xyxyxyxyx -out ./file.tar.gz
+
+tar 解压
+openssl des3 -d -k xyxyxyxyx -salt -in file.tar.gz | tar xzf -
+
+
+
+8, How can I check if my CPU is AMD64 compatible?
+
+lscpu
+
+cat /proc/cpuinfo
+
+Architecture:          i686
+CPU op-mode(s):        32-bit, 64-bit
+Byte Order:            Little Endian
+CPU(s):                4
+On-line CPU(s) list:   0-3
+Thread(s) per core:    2
+Core(s) per socket:    2
+Socket(s):             1
+Vendor ID:             GenuineIntel
+CPU family:            6
+Model:                 42
+Stepping:              7
+CPU MHz:               2301.000
+BogoMIPS:              4589.37
+Virtualization:        VT-x
+L1d cache:             32K
+L1i cache:             32K
+L2 cache:              256K
+L3 cache:              3072K
+For Intel systems, the Vendor ID is - GenuineIntel and for AMD - AuthenticAMD.
+
+But they are compatible. It is a bit of an historical artifact in that AMD was the creator of the 64 bit 'long' mode, and later Intel matched that creation.
+But naming often refers to any 64 bit binary as an AMD/64bit format, usually with the label 'AMD64'.
+
+