Shell learning: Call between scripts

In Java and python, you can use the import method to call scripts or modules. For example:

>>> import math>>> math.sqrt(4)2.0

In Shell, how do I call other shell scripts, or variables and functions in other scripts?

Method 1:../Subscript. Sh

Method 2:Source./Subscript. Sh

Note:

• There is a space between two points. Please note that.
• The two scripts are not in the same directory and must use an absolute path.
• For simplicity, the first method is usually used.

For example:

• Main. Sh # Main script
• Subscripts. Sh # subscript, or called script

### Subscripts. Sh script content :####! /Bin/bashstring = "Hello, world! \ N"

### Main. Sh script content ####! /Bin/bash ../subscripts. shecho-e $ {string} exit 0

Output result:

# chmod +x ./main.sh# ./main.shHello,World!#

Note:

• The script to be called can have no execution permission, and the script to be called must have the executable permission.
  
• Chmod + X./Main. Sh # Note that there is something here, otherwise the bash script may not be found.