bash - linux环境变量设置消失

Question

我有以下 bash 脚本:

#!/bin/bash
export PYCACHED_HOST='localhost'
export PYCACHED_PORT=8001
echo "PyCached environment variables set to: PYCACHED_HOST=`echo $PYCACHED_HOST`, PYCACHED_PORT=`echo $PYCACHED_PORT`"

当我运行它时，会打印以下输出:

PyCached environment variables set to: PYCACHED_HOST=localhost, PYCACHED_PORT=8001

当我再次运行相同的回显行时:

echo "PyCached environment variables set to: PYCACHED_HOST=`echo $PYCACHED_HOST`, PYCACHED_PORT=`echo $PYCACHED_PORT`"

我得到:

PyCached environment variables set to: PYCACHED_HOST=, PYCACHED_PORT=

我知道环境变量是为脚本上下文设置的，但是我该怎么做才能在脚本执行结束后使它们可用？

Answer 1

what can I do to make them available after the script execution is over?

运行你的脚本;

source ./script.sh

或

. ./script.sh

这将在当前 shell 中运行您的脚本而不创建新进程，因此环境变量将在脚本结束后在当前 shell 中可用。