# An ACME Shell script: acme.sh
[](https://github.com/acmesh-official/acme.sh/actions/workflows/FreeBSD.yml)
[](https://github.com/acmesh-official/acme.sh/actions/workflows/MacOS.yml)
[](https://github.com/acmesh-official/acme.sh/actions/workflows/Ubuntu.yml)
[](https://github.com/acmesh-official/acme.sh/actions/workflows/Windows.yml)
[](https://github.com/acmesh-official/acme.sh/actions/workflows/Solaris.yml)
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[](https://hub.docker.com/r/neilpang/acme.sh "Click to view the image on Docker Hub")
[](https://hub.docker.com/r/neilpang/acme.sh "Click to view the image on Docker Hub")
- An ACME protocol client written purely in Shell (Unix shell) language.
- Full ACME protocol implementation.
- Support ECDSA certs
- Support SAN and wildcard certs
- Simple, powerful and very easy to use. You only need 3 minutes to learn it.
- Bash, dash and sh compatible.
- Purely written in Shell with no dependencies on python.
- Just one script to issue, renew and install your certificates automatically.
- DOES NOT require `root/sudoer` access.
- Docker ready
- IPv6 ready
- Cron job notifications for renewal or error etc.
It's probably the `easiest & smartest` shell script to automatically issue & renew the free certificates.
Wiki: https://github.com/acmesh-official/acme.sh/wiki
For Docker Fans: [acme.sh :two_hearts: Docker ](https://github.com/acmesh-official/acme.sh/wiki/Run-acme.sh-in-docker )
Twitter: [@neilpangxa ](https://twitter.com/neilpangxa )
# [中文说明](https://github.com/acmesh-official/acme.sh/wiki/%E8%AF%B4%E6%98%8E)
# Who:
- [FreeBSD.org ](https://blog.crashed.org/letsencrypt-in-freebsd-org/ )
- [ruby-china.org ](https://ruby-china.org/topics/31983 )
- [Proxmox ](https://pve.proxmox.com/wiki/Certificate_Management )
- [pfsense ](https://github.com/pfsense/FreeBSD-ports/pull/89 )
- [webfaction ](https://community.webfaction.com/questions/19988/using-letsencrypt )
- [Loadbalancer.org ](https://www.loadbalancer.org/blog/loadbalancer-org-with-lets-encrypt-quick-and-dirty )
- [discourse.org ](https://meta.discourse.org/t/setting-up-lets-encrypt/40709 )
- [Centminmod ](https://centminmod.com/letsencrypt-acmetool-https.html )
- [splynx ](https://forum.splynx.com/t/free-ssl-cert-for-splynx-lets-encrypt/297 )
- [archlinux ](https://www.archlinux.org/packages/community/any/acme.sh )
- [opnsense.org ](https://github.com/opnsense/plugins/tree/master/security/acme-client/src/opnsense/scripts/OPNsense/AcmeClient )
- [CentOS Web Panel ](http://centos-webpanel.com/ )
- [lnmp.org ](https://lnmp.org/ )
- [more... ](https://github.com/acmesh-official/acme.sh/wiki/Blogs-and-tutorials )
# Tested OS
| NO | Status| Platform|
|----|-------|---------|
|1|[](https://github.com/acmesh-official/acme.sh/actions/workflows/MacOS.yml)|Mac OSX
|2|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Windows.yml)|Windows (cygwin with curl, openssl and crontab included)
|3|[](https://github.com/acmesh-official/acme.sh/actions/workflows/FreeBSD.yml)|FreeBSD
|4|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Solaris.yml)|Solaris
|5|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Ubuntu.yml)| Ubuntu
|6|NA|pfsense
|7|NA|OpenBSD
|8|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)| Debian
|9|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|CentOS
|10|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|openSUSE
|11|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Alpine Linux (with curl)
|12|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Archlinux
|13|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|fedora
|14|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Kali Linux
|15|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Oracle Linux
|16|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Mageia
|17|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|Gentoo Linux
|18|[](https://github.com/acmesh-official/acme.sh/actions/workflows/Linux.yml)|ClearLinux
|19|-----| Cloud Linux https://github.com/acmesh-official/acme.sh/issues/111
|20|-----| OpenWRT: Tested and working. See [wiki page ](https://github.com/acmesh-official/acme.sh/wiki/How-to-run-on-OpenWRT )
|21|[](https://github.com/acmesh-official/letest#here-are-the-latest-status)| Proxmox: See Proxmox VE Wiki. Version [4.x, 5.0, 5.1 ](https://pve.proxmox.com/wiki/HTTPS_Certificate_Configuration_(Version_4.x,_5.0_and_5.1 )#Let .27s_Encrypt_using_acme.sh), version [5.2 and up ](https://pve.proxmox.com/wiki/Certificate_Management )
Check our [testing project ](https://github.com/acmesh-official/acmetest ):
https://github.com/acmesh-official/acmetest
# Supported CA
- [ZeroSSL.com CA ](https://github.com/acmesh-official/acme.sh/wiki/ZeroSSL.com-CA )(default)
- Letsencrypt.org CA
- [BuyPass.com CA ](https://github.com/acmesh-official/acme.sh/wiki/BuyPass.com-CA )
- [SSL.com CA ](https://github.com/acmesh-official/acme.sh/wiki/SSL.com-CA )
- [Pebble strict Mode ](https://github.com/letsencrypt/pebble )
- Any other [RFC8555 ](https://tools.ietf.org/html/rfc8555 )-compliant CA
# Supported modes
- Webroot mode
- Standalone mode
- Standalone tls-alpn mode
- Apache mode
- Nginx mode
- DNS mode
- [DNS alias mode ](https://github.com/acmesh-official/acme.sh/wiki/DNS-alias-mode )
- [Stateless mode ](https://github.com/acmesh-official/acme.sh/wiki/Stateless-Mode )
# 1. How to install
### 1. Install online
Check this project: https://github.com/acmesh-official/get.acme.sh
```bash
curl https://get.acme.sh | sh -s email=my@example.com
```
Or:
```bash
wget -O - https://get.acme.sh | sh -s email=my@example.com
```
### 2. Or, Install from git
Clone this project and launch installation:
```bash
git clone https://github.com/acmesh-official/acme.sh.git
cd ./acme.sh
./acme.sh --install -m my@example.com
```
You `don't have to be root` then, although `it is recommended` .
Advanced Installation: https://github.com/acmesh-official/acme.sh/wiki/How-to-install
The installer will perform 3 actions:
1. Create and copy `acme.sh` to your home dir (`$HOME`): `~/.acme.sh/` .
All certs will be placed in this folder too.
2. Create alias for: `acme.sh=~/.acme.sh/acme.sh` .
3. Create daily cron job to check and renew the certs if needed.
Cron entry example:
```bash
0 0 * * * "/home/user/.acme.sh"/acme.sh --cron --home "/home/user/.acme.sh" > /dev/null
```
After the installation, you must close the current terminal and reopen it to make the alias take effect.
Ok, you are ready to issue certs now.
Show help message:
```sh
root@v1:~# acme.sh -h
```
# 2. Just issue a cert
**Example 1:** Single domain.
```bash
acme.sh --issue -d example.com -w /home/wwwroot/example.com
```
or:
```bash
acme.sh --issue -d example.com -w /home/username/public_html
```
or:
```bash
acme.sh --issue -d example.com -w /var/www/html
```
**Example 2:** Multiple domains in the same cert.
```bash
acme.sh --issue -d example.com -d www.example.com -d cp.example.com -w /home/wwwroot/example.com
```
The parameter `/home/wwwroot/example.com` or `/home/username/public_html` or `/var/www/html` is the web root folder where you host your website files. You **MUST** have `write access` to this folder.
Second argument ** "example.com"** is the main domain you want to issue the cert for.
You must have at least one domain there.
You must point and bind all the domains to the same webroot dir: `/home/wwwroot/example.com` .
The certs will be placed in `~/.acme.sh/example.com/`
The certs will be renewed automatically every **60** days.
More examples: https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert
# 3. Install the cert to Apache/Nginx etc.
After the cert is generated, you probably want to install/copy the cert to your Apache/Nginx or other servers.
You **MUST** use this command to copy the certs to the target files, **DO NOT** use the certs files in ** ~/.acme.sh/** folder, they are for internal use only, the folder structure may change in the future.
**Apache** example:
```bash
acme.sh --install-cert -d example.com \
--cert-file /path/to/certfile/in/apache/cert.pem \
--key-file /path/to/keyfile/in/apache/key.pem \
--fullchain-file /path/to/fullchain/certfile/apache/fullchain.pem \
--reloadcmd "service apache2 force-reload"
```
**Nginx** example:
```bash
acme.sh --install-cert -d example.com \
--key-file /path/to/keyfile/in/nginx/key.pem \
--fullchain-file /path/to/fullchain/nginx/cert.pem \
--reloadcmd "service nginx force-reload"
```
Only the domain is required, all the other parameters are optional.
The ownership and permission info of existing files are preserved. You can pre-create the files to define the ownership and permission.
Install/copy the cert/key to the production Apache or Nginx path.
The cert will be renewed every **60** days by default (which is configurable). Once the cert is renewed, the Apache/Nginx service will be reloaded automatically by the command: `service apache2 force-reload` or `service nginx force-reload` .
**Please take care: The reloadcmd is very important. The cert can be automatically renewed, but, without a correct 'reloadcmd' the cert may not be flushed to your server(like nginx or apache), then your website will not be able to show renewed cert in 60 days.**
# 4. Use Standalone server to issue cert
**(requires you to be root/sudoer or have permission to listen on port 80 (TCP))**
Port `80` (TCP) **MUST** be free to listen on, otherwise you will be prompted to free it and try again.
```bash
acme.sh --issue --standalone -d example.com -d www.example.com -d cp.example.com
```
More examples: https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert
# 5. Use Standalone ssl server to issue cert
**(requires you to be root/sudoer or have permission to listen on port 443 (TCP))**
Port `443` (TCP) **MUST** be free to listen on, otherwise you will be prompted to free it and try again.
```bash
acme.sh --issue --alpn -d example.com -d www.example.com -d cp.example.com
```
More examples: https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert
# 6. Use Apache mode
**(requires you to be root/sudoer, since it is required to interact with Apache server)**
If you are running a web server, it is recommended to use the `Webroot mode` .
Particularly, if you are running an Apache server, you can use Apache mode instead. This mode doesn't write any files to your web root folder.
Just set string "apache" as the second argument and it will force use of apache plugin automatically.
```sh
acme.sh --issue --apache -d example.com -d www.example.com -d cp.example.com
```
**This apache mode is only to issue the cert, it will not change your apache config files.
You will need to configure your website config files to use the cert by yourself.
We don't want to mess with your apache server, don't worry.**
More examples: https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert
# 7. Use Nginx mode
**(requires you to be root/sudoer, since it is required to interact with Nginx server)**
If you are running a web server, it is recommended to use the `Webroot mode` .
Particularly, if you are running an nginx server, you can use nginx mode instead. This mode doesn't write any files to your web root folder.
Just set string "nginx" as the second argument.
It will configure nginx server automatically to verify the domain and then restore the nginx config to the original version.
So, the config is not changed.
```sh
acme.sh --issue --nginx -d example.com -d www.example.com -d cp.example.com
```
**This nginx mode is only to issue the cert, it will not change your nginx config files.
You will need to configure your website config files to use the cert by yourself.
We don't want to mess with your nginx server, don't worry.**
More examples: https://github.com/acmesh-official/acme.sh/wiki/How-to-issue-a-cert
# 8. Automatic DNS API integration
If your DNS provider supports API access, we can use that API to automatically issue the certs.
You don't have to do anything manually!
### Currently acme.sh supports most of the dns providers:
https://github.com/acmesh-official/acme.sh/wiki/dnsapi
# 9. Use DNS manual mode:
See: https://github.com/acmesh-official/acme.sh/wiki/dns-manual-mode first.
If your dns provider doesn't support any api access, you can add the txt record by hand.
```bash
acme.sh --issue --dns -d example.com -d www.example.com -d cp.example.com
```
You should get an output like below:
```sh
Add the following txt record:
Domain:_acme-challenge.example.com
Txt value:9ihDbjYfTExAYeDs4DBUeuTo18KBzwvTEjUnSwd32-c
Add the following txt record:
Domain:_acme-challenge.www.example.com
Txt value:9ihDbjxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Please add those txt records to the domains. Waiting for the dns to take effect.
```
Then just rerun with `renew` argument:
```bash
acme.sh --renew -d example.com
```
Ok, it's done.
**Take care, this is dns manual mode, it can not be renewed automatically. you will have to add a new txt record to your domain by your hand when you renew your cert.**
**Please use dns api mode instead.**
# 10. Issue ECC certificates
`Let's Encrypt` can now issue **ECDSA** certificates.
And we support them too!
Just set the `keylength` parameter with a prefix `ec-` .
For example:
### Single domain ECC certificate
```bash
acme.sh --issue -w /home/wwwroot/example.com -d example.com --keylength ec-256
```
### SAN multi domain ECC certificate
```bash
acme.sh --issue -w /home/wwwroot/example.com -d example.com -d www.example.com --keylength ec-256
```
Please look at the `keylength` parameter above.
Valid values are:
1. **ec-256 (prime256v1, "ECDSA P-256")**
2. **ec-384 (secp384r1, "ECDSA P-384")**
3. **ec-521 (secp521r1, "ECDSA P-521", which is not supported by Let's Encrypt yet.)**
# 11. Issue Wildcard certificates
It's simple, just give a wildcard domain as the `-d` parameter.
```sh
acme.sh --issue -d example.com -d '*.example.com' --dns dns_cf
```
# 12. How to renew the certs
No, you don't need to renew the certs manually. All the certs will be renewed automatically every **60** days.
However, you can also force to renew a cert:
```sh
acme.sh --renew -d example.com --force
```
or, for ECC cert:
```sh
acme.sh --renew -d example.com --force --ecc
```
# 13. How to stop cert renewal
To stop renewal of a cert, you can execute the following to remove the cert from the renewal list:
```sh
acme.sh --remove -d example.com [--ecc]
```
The cert/key file is not removed from the disk.
You can remove the respective directory (e.g. `~/.acme.sh/example.com` ) by yourself.
# 14. How to upgrade `acme.sh`
acme.sh is in constant development, so it's strongly recommended to use the latest code.
You can update acme.sh to the latest code:
```sh
acme.sh --upgrade
```
You can also enable auto upgrade:
```sh
acme.sh --upgrade --auto-upgrade
```
Then **acme.sh** will be kept up to date automatically.
Disable auto upgrade:
```sh
acme.sh --upgrade --auto-upgrade 0
```
# 15. Issue a cert from an existing CSR
https://github.com/acmesh-official/acme.sh/wiki/Issue-a-cert-from-existing-CSR
# 16. Send notifications in cronjob
https://github.com/acmesh-official/acme.sh/wiki/notify
# 17. Under the Hood
Speak ACME language using shell, directly to "Let's Encrypt".
TODO:
# 18. Acknowledgments
1. Acme-tiny: https://github.com/diafygi/acme-tiny
2. ACME protocol: https://github.com/ietf-wg-acme/acme
## Contributors
### Code Contributors
This project exists thanks to all the people who contribute.
< a href = "https://github.com/acmesh-official/acme.sh/graphs/contributors" > < img src = "https://opencollective.com/acmesh/contributors.svg?width=890&button=false" / > < / a >
### Financial Contributors
Become a financial contributor and help us sustain our community. [[Contribute ](https://opencollective.com/acmesh/contribute )]
#### Individuals
< a href = "https://opencollective.com/acmesh" > < img src = "https://opencollective.com/acmesh/individuals.svg?width=890" > < / a >
#### Organizations
Support this project with your organization. Your logo will show up here with a link to your website. [[Contribute ](https://opencollective.com/acmesh/contribute )]
< a href = "https://opencollective.com/acmesh/organization/0/website" > < img src = "https://opencollective.com/acmesh/organization/0/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/1/website" > < img src = "https://opencollective.com/acmesh/organization/1/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/2/website" > < img src = "https://opencollective.com/acmesh/organization/2/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/3/website" > < img src = "https://opencollective.com/acmesh/organization/3/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/4/website" > < img src = "https://opencollective.com/acmesh/organization/4/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/5/website" > < img src = "https://opencollective.com/acmesh/organization/5/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/6/website" > < img src = "https://opencollective.com/acmesh/organization/6/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/7/website" > < img src = "https://opencollective.com/acmesh/organization/7/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/8/website" > < img src = "https://opencollective.com/acmesh/organization/8/avatar.svg" > < / a >
< a href = "https://opencollective.com/acmesh/organization/9/website" > < img src = "https://opencollective.com/acmesh/organization/9/avatar.svg" > < / a >
# 19. License & Others
License is GPLv3
Please Star and Fork me.
[Issues ](https://github.com/acmesh-official/acme.sh/issues ) and [pull requests ](https://github.com/acmesh-official/acme.sh/pulls ) are welcome.
# 20. Donate
Your donation makes **acme.sh** better:
1. PayPal/Alipay(支付宝)/Wechat(微信): [https://donate.acme.sh/ ](https://donate.acme.sh/ )
[Donate List ](https://github.com/acmesh-official/acme.sh/wiki/Donate-list )
