The shell file contains

Create a two shell script file. The test1.sh code is as follows:

#!/bin/bashurl= "Http://www.cnblogs.com/freescience"

The test2.sh code is as follows:

#!/bin/bash# use. To reference the test1.sh file. ./test1.sh# or use the following include file code # source./test1.sh
echo "Fresses official website address: $url"

Next, we add executable permissions for test2.sh and execute:

chmod +x test2.sh/test2.sh Fresses official website address: http://www.cnblogs.com/freescience

Note: The included file test1.sh does not require executable permissions

The shell file contains