The shell file contains

Like other languages, the Shell can also contain external scripts that merge the contents of the external script into the current script.

The Shell contains scripts that can be used:

1. . FileName

Or

1. SOURCE filename

The effect of the two methods is the same, for simplicity, the dot (.) is generally used, but note the dot (.) There is a space in the middle of the file name.

For example, create two scripts, one called Script subscript.sh, with the following:

1. URL="http://see.xidian.edu.cn/cpp/view/2738.html"

One is the main file main.sh, which reads as follows:

1. #!/bin/bash
2. . . /subscript. Sh
3. echo $url

Execute script:

$CHOMD +x main.sh./main.shhttp://see.xidian.edu.cn/cpp/view/2738.html$

Note: The included scripts do not need to have execute permissions.

The shell file contains