sh 获取当前运行脚本的包含目录，存储为$ dir

Posted 2021-05-07

# foolproof way to figure out where this script is placed
source="${BASH_SOURCE[0]}"
while [ -h "$source" ]; do # resolve $source until the file is no longer a symlink
  dir="$( cd -P "$( dirname "$source" )" && pwd )"
  source="$(readlink "$source")"
  # if $source was a relative symlink, we need to resolve it relative
  # to the path where the symlink file was located
  [[ $source != /* ]] && source="$dir/$source"
done
dir="$( cd -P "$( dirname "$source" )" && pwd )" #dir now has the script locat'n