Bash 返回到原路径

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字数统计:

在Bash中，运行指定路径BASE_DIR命令，结束时返回原路径BACK_DIR。
可以实现配置和脚本分离。

调用命令

通过固定的cd参数$BASE_DIR和$BACK_DIR调用，更改命令工作目录。

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#!/bin/bash

BACK_DIR=$(pwd)
fun_init_shdir
BASE_DIR=$SHDIR
# REAL_DIR=$(cd $(dirname $(readlink -f "${BASH_SOURCE[0]}")) && pwd )
cd $BASE_DIR
echo "====  cd base  ===="

echo "bash 脚本路径 $(pwd)"

cd $BACK_DIR
echo "====  cd back  ===="
fun_init_shdir() {
  SOURCE="${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")"
    [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
	# if $SOURCE was a relative symlink, resolve it relative to the path where the symlink file was located
  done
  SHDIR=$( cd -P "$( dirname "$SOURCE" )" && pwd )
}
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