# Problem with ./sandbox enter

**URL:** <https://forum.algorand.co/t/problem-with-sandbox-enter/2371>\
**Category:** Uncategorized\
**Created:** [January 4, 2021, 1:25pm UTC](https://forum.algorand.co/t/problem-with-sandbox-enter/2371 "2021-01-04T13:25:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rafmc98](https://avatars.discourse-cdn.com/v4/letter/r/ecc23a/32.png) [@rafmc98](https://forum.algorand.co/u/rafmc98)\
**Post date:** [January 4, 2021, 1:25pm UTC](https://forum.algorand.co/t/problem-with-sandbox-enter/2371/1 "2021-01-04T13:25:51Z")

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When i try to use the following command in sandbox docker:  
`./sandbox enter`  
the returned output is  
`./sandbox: line 275: $2: unbound variable`  
Can anyone tell me how to solve this?

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**Author:** ![JasonW](https://avatars.discourse-cdn.com/v4/letter/j/e47c2d/32.png) [@JasonW](https://forum.algorand.co/u/JasonW)\
**Post date:** [January 4, 2021, 2:28pm UTC](https://forum.algorand.co/t/problem-with-sandbox-enter/2371/2 "2021-01-04T14:28:12Z")

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You need to specify algod, indexer or indexerdb. Run ./sandbox and you will see the options. To enter the algod sandbox, type ./sandbox enter algod