增加一些通用的脚本，抽象成命令

[BrightXiaoHan]

• [ ] git 同步远程仓库
• [ ] useenv

[BrightXiaoHan]

useenv

• https://github.com/LunarVim/LunarVim/issues/1357

• https://stackoverflow.com/questions/65847159/how-to-set-python-interpreter-in-neovim-for-python-language-server-depending-on

  useenv() {
  local OLD_PATH=$PWD
  local VENV_DIR=${1:-'.venv'} #default venv name
  local FOUND
  
  while [ -z "$FOUND" ] ; do
  if ls ${VENV_DIR}/bin/activate 2>/dev/null >/dev/null ; then
    source ${VENV_DIR}/bin/activate
    FOUND='FOUND'
    break
  fi
  
  if [ "/home/$USER" == "$PWD" ] || [ '/' == "$PWD" ] ; then
    break
  fi
  
  cd ..
  done
  
  if [ -z "$FOUND" ] ;then
  echo "venv not found"
  else
  VERSION=`python3 --version 2>&1`
  printf 'Using %s\n' "$VERSION"
  echo found on $PWD
  fi
  
  cd $OLD_PATH
  }