Linux Command-source

We know that source is executing a script, so what's the difference between him and ordinary execution?

test1.sh

#!/bin/shexport kkk=111

General execution:

[Email protected]:~$./test1.sh[email protected]:~$ Echo $KKK

No results.

Source execution:

[Email protected]:~$ source Test1.sh[email protected]:~$ Echo $KKK 111

Have the result.

Why is that?

because./test1.shis in the childShellrun in, and did not reflect to the FatherShell, so I can't see the result.

but Source is in this Shell so that you can see the results.

    Because of his "explicit" characteristics, source ( ) /span> typically used to re-execute the newly modified initialization document,

as . Bash_profile and the . profile and so on.

For example, for. Bash_profilein theEditerand the Termvariables have been modified,

withSourceExecute Script(called theEditerand the Termvariables), you do not have to log off or restart (PC).

Linux Command-source