# Nextstrain Installation (epiweek)

**URL:** <https://nextstrain.discourse.group/t/nextstrain-installation-epiweek/1162>\
**Category:** Uncategorized\
**Created:** [June 29, 2022, 5:04am UTC](https://nextstrain.discourse.group/t/nextstrain-installation-epiweek/1162 "2022-06-29T05:04:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sapna](https://avatars.discourse-cdn.com/v4/letter/s/ee59a6/32.png) [@sapna](https://nextstrain.discourse.group/u/sapna)\
**Post date:** [June 29, 2022, 5:04am UTC](https://nextstrain.discourse.group/t/nextstrain-installation-epiweek/1162/1 "2022-06-29T05:04:58Z")

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Hello Everyone,  
i am new to Nextstrain. while following the given Nextstain installation

i am and stuck on this command  
“epiweeks nextclade nextalign pangolin pangolearn”  
output  
“‘epiweeks’ is not recognized as an internal or external command,  
operable program or batch file.”

i have try all possible way to rectify this but nothing work

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**Author:** ![james](https://yyz1.discourse-cdn.com/flex031/user_avatar/nextstrain.discourse.group/james/32/11_2.png) [@james](https://nextstrain.discourse.group/u/james)\
**Post date:** [June 29, 2022, 6:54am UTC](https://nextstrain.discourse.group/t/nextstrain-installation-epiweek/1162/2 "2022-06-29T06:54:27Z")

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Hi @sapna – that [install command](https://docs.nextstrain.org/projects/ncov/en/latest/tutorial/setup.html) is actually a single command spread over two lines (the trailing slash on the preceeding line indicates this) rather than two commands. Perhaps the trailing slash didn’t get copied over? For a one-line solution you can run:

```auto
mamba install -c conda-forge -c bioconda epiweeks nextclade nextalign pangolin pangolearn

```

Good luck!

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<div class="post-metadata">

**Author:** ![sapna](https://avatars.discourse-cdn.com/v4/letter/s/ee59a6/32.png) [@sapna](https://nextstrain.discourse.group/u/sapna)\
**Post date:** [June 30, 2022, 5:11am UTC](https://nextstrain.discourse.group/t/nextstrain-installation-epiweek/1162/3 "2022-06-30T05:11:52Z")

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> [@james](#):
>
> ```auto
> mamba install -c conda-forge -c bioconda epiweeks nextclade nextalign pangolin pangolearn
> 
> ```

thank you James… its work 🙂