$(cd "$(dirname "$0")",pwd) 解析
xx.sh 文件内容如下:
#!/bin/bash BIN_FOLDER=$(cd "$(dirname "$0")";pwd) echo $BIN_FOLDER PROJECT_FOLDER=$(cd "$(dirname "$BIN_FOLDER")";pwd) echo $PROJECT_FOLDER PYTHON_BIN=$PROJECT_FOLDER/.venv/bin/python echo $PYTHON_BIN
BIN_FOLDER = $(cd "$(dirname "$0")",pwd) 解析:
1、取当前运行脚本的所在路径: $0
2、取当前脚本所在路径的父目录: dirname "$0"
3、取返回的父目录的值: $(dirname "$0")
4、cd到返回的父目录: cd "$(dirname "$0")"
5、输出地址: cd "$(dirname "$0")",pwd
6、取输出的地址,并赋值给BIN_FOLDER: BIN_FOLDER = $(cd "$(dirname "$0")",pwd)