Bash what does export do

Below is an example of the expected output. If you wish to view all exported variables on the current shell, use the -p flag as shown in the example. Suppose you have a function and you wish to export it, how do you go about it? In this case , the -f flag is used. In this example, we are exporting the function name. The above can be achieved in 2 simple steps by declaring and exporting the variable in one line as shown. This concludes our tutorial about export command.

Go ahead and give it a try and see the magic! Your feedback is most welcome. Good info. It's fine to copy paste some documentation or provide a link, in fact it is encouraged, but there should be some additional quality explanation.

We are all trying to learn and have different ways we gain understanding, this helps cover a variety of learning styles and will improve your rating. Show 1 more comment. Exported variables get passed on to child processes, not-exported variables do not. Pylsa Pylsa Can you point to any documentation to that affect. I am looking for more information than that. For instance, does a variable only need to be exported once, or do you need to export it after every change, etc.

You could check this out: superuser. This answer does not seem to be entirely true either. JepZ I think the examples you've given don't apply. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end. Does ES6 make JavaScript frameworks obsolete? Featured on Meta. Now live: A fully responsive profile.

Linked Related 0. Hot Network Questions. Super User works best with JavaScript enabled. Note that if the script is run in restricted mode, export functions are not included. We can modify the script above in order to run in restricted mode as follows. Source: test-export-cleanup-restricted. Running functions as part of a xargs command list require functions to be exported. You can use the export command. Source: test-export-xargs. Source: test-export-all-functions.

You may want to inspect export function before running the payload of your script. Source: test-export-inspect.

Source: test-export-all-variables. Export is a builtin command that allows manipulation of export attributes for variables and functions. It can also be used to display names attributed to export. All export commands may be implemented using the declare command. A developer and advocate of shell scripting and vim. His works include automation tools, static site generators, and web crawlers written in bash. For work he tools with cloud computing, app development, and chatbots.

He codes in bash, python, or php, but is open to offers.