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# An ACME Shell script: acme.sh
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- An ACME protocol client written purely in Shell (Unix shell) language.
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- Fully ACME protocol implementation.
- Simple, powerful and very easy to use. You only need 3 minutes to learn.
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- Bash, dash and sh compatible.
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- Simplest shell script for Let's Encrypt free certificate client.
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- Purely written in Shell with no dependencies on python or Let's Encrypt official client.
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- Just one script, to issue, renew and install your certificates automatically.
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- DOES NOT require `root/sudoer` access.
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It's probably the `easiest&smallest&smartest` shell script to automatically issue & renew the free certificates from Let's Encrypt.
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Wiki: https://github.com/Neilpang/acme.sh/wiki
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#Tested OS
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| NO | Status| Platform|
|----|-------|---------|
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|1|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/ubuntu-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)| Ubuntu
|2|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/debian-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)| Debian
|3|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/centos-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|CentOS
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|4|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/windows-cygwin.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Windows (cygwin with curl, openssl and crontab included)
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|5|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/freebsd.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|FreeBSD
|6|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/pfsense.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|pfsense
|7|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/opensuse-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|openSUSE
|8|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/alpine-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Alpine Linux (with curl)
|9|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/base-archlinux.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Archlinux
|10|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/fedora-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|fedora
|11|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/kalilinux-kali-linux-docker.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Kali Linux
|12|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/oraclelinux-latest.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Oracle Linux
|13|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/proxmox.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)| Proxmox https://pve.proxmox.com/wiki/HTTPSCertificateConfiguration#Let.27s_Encrypt_using_acme.sh
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|14|-----| Cloud Linux https://github.com/Neilpang/le/issues/111
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|15|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/openbsd.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|OpenBSD
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For all build statuses, check our [daily build project ](https://github.com/Neilpang/acmetest ):
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https://github.com/Neilpang/acmetest
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# Supported Mode
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1. Webroot mode
2. Standalone mode
3. Apache mode
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4. Dns mode
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# Upgrade from 1.x to 2.x
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You can simply uninstall 1.x and re-install 2.x.
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2.x is 100% compatible to 1.x. You will feel right at home as if nothing has changed.
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# le.sh renamed to acme.sh NOW!
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All configurations are 100% compatible between `le.sh` and `acme.sh` . You just need to uninstall `le.sh` and re-install `acme.sh` again.
Nothing will be broken during the process.
# How to install
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### 1. Install online:
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Check this project: https://github.com/Neilpang/get.acme.sh
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```bash
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curl https://get.acme.sh | sh
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```
Or:
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```bash
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wget -O - https://get.acme.sh | sh
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```
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### 2. Or, Install from git:
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Clone this project:
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```bash
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git clone https://github.com/Neilpang/acme.sh.git
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cd ./acme.sh
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./acme.sh --install
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```
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You `don't have to be root` then, although `it is recommended` .
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Advanced Installation: https://github.com/Neilpang/acme.sh/wiki/How-to-install
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The installer will perform 3 actions:
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1. Create and copy `acme.sh` to your home dir (`$HOME`): `~/.acme.sh/` .
All certs will be placed in this folder.
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2. Create alias for: `acme.sh=~/.acme.sh/acme.sh` .
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3. Create everyday cron job to check and renew the cert if needed.
Cron entry example:
```bash
0 0 * * * "/home/user/.acme.sh"/acme.sh --cron --home "/home/user/.acme.sh" > /dev/null
```
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After the installation, you must close current terminal and reopen again to make the alias take effect.
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Ok, you are ready to issue cert now.
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Show help message:
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```
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root@v1:~# acme.sh
https://github.com/Neilpang/acme.sh
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v2.1.1
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Usage: acme.sh command ...[parameters]....
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Commands:
--help, -h Show this help message.
--version, -v Show version info.
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--install Install acme.sh to your system.
--uninstall Uninstall acme.sh, and uninstall the cron job.
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--issue Issue a cert.
--installcert Install the issued cert to apache/nginx or any other server.
--renew, -r Renew a cert.
--renewAll Renew all the certs
--revoke Revoke a cert.
--installcronjob Install the cron job to renew certs, you don't need to call this. The 'install' command can automatically install the cron job.
--uninstallcronjob Uninstall the cron job. The 'uninstall' command can do this automatically.
--cron Run cron job to renew all the certs.
--toPkcs Export the certificate and key to a pfx file.
--createAccountKey, -cak Create an account private key, professional use.
--createDomainKey, -cdk Create an domain private key, professional use.
--createCSR, -ccsr Create CSR , professional use.
Parameters:
--domain, -d domain.tld Specifies a domain, used to issue, renew or revoke etc.
--force, -f Used to force to install or force to renew a cert immediately.
--staging, --test Use staging server, just for test.
--debug Output debug info.
--webroot, -w /path/to/webroot Specifies the web root folder for web root mode.
--standalone Use standalone mode.
--apache Use apache mode.
--dns [dns-cf|dns-dp|dns-cx|/path/to/api/file] Use dns mode or dns api.
--keylength, -k [2048] Specifies the domain key length: 2048, 3072, 4096, 8192 or ec-256, ec-384.
--accountkeylength, -ak [2048] Specifies the account key length.
These parameters are to install the cert to nginx/apache or anyother server after issue/renew a cert:
--certpath /path/to/real/cert/file After issue/renew, the cert will be copied to this path.
--keypath /path/to/real/key/file After issue/renew, the key will be copied to this path.
--capath /path/to/real/ca/file After issue/renew, the intermediate cert will be copied to this path.
--fullchainpath /path/to/fullchain/file After issue/renew, the fullchain cert will be copied to this path.
--reloadcmd "service nginx reload" After issue/renew, it's used to reload the server.
--accountconf Specifies a customized account config file.
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--home Specifies the home dir for acme.sh .
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--certhome Specifies the home dir to save all the certs, only valid for '--install' command.
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--useragent Specifies the user agent string. it will be saved for future use too.
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--accountemail Specifies the account email for registering, Only valid for the '--install' command.
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--accountkey Specifies the account key path, Only valid for the '--install' command.
--days Specifies the days to renew the cert when using '--issue' command. The max value is 80 days.
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```
# Just issue a cert:
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**Example 1:** Single domain.
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```bash
acme.sh --issue -d aa.com -w /home/wwwroot/aa.com
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```
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**Example 2:** Multiple domains in the same cert.
```bash
acme.sh --issue -d aa.com -d www.aa.com -d cp.aa.com -w /home/wwwroot/aa.com
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```
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The parameter `/home/wwwroot/aa.com` is the web root folder. You **MUST** have `write access` to this folder.
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Second argument ** "aa.com"** is the main domain you want to issue cert for.
You must have at least a domain there.
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You must point and bind all the domains to the same webroot dir: `/home/wwwroot/aa.com` .
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Generate/issued certs will be placed in `~/.acme.sh/aa.com/`
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The issued cert will be renewed every 80 days automatically.
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# Install issued cert to apache/nginx etc.
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After you issue a cert, you probably want to install the cert with your nginx/apache or other servers you may be using.
```bash
acme.sh --installcert -d aa.com \
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--certpath /path/to/certfile/in/apache/nginx \
--keypath /path/to/keyfile/in/apache/nginx \
--capath /path/to/ca/certfile/apache/nginx \
--fullchainpath path/to/fullchain/certfile/apache/nginx \
--reloadcmd "service apache2|nginx reload"
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```
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Only the domain is required, all the other parameters are optional.
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Install the issued cert/key to the production apache or nginx path.
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The cert will be `renewed every 80 days by default` (which is configurable). Once the cert is renewed, the apache/nginx will be automatically reloaded by the command: `service apache2 reload` or `service nginx reload` .
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# Use Standalone server to issue cert
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**(requires you be root/sudoer, or you have permission to listen tcp 80 port)**
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The tcp `80` port **MUST** be free to listen, otherwise you will be prompted to free the `80` port and try again.
```bash
acme.sh --issue --standalone -d aa.com -d www.aa.com -d cp.aa.com
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```
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# Use Apache mode
**(requires you be root/sudoer, since it is required to interact with apache server)**
If you are running a web server, apache or nginx, it is recommended to use the `Webroot mode` .
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Particularly, if you are running an apache server, you should use apache mode instead. This mode doesn't write any files to your web root folder.
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Just set string "apache" as the second argument, it will force use of apache plugin automatically.
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```
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acme.sh --issue --apache -d aa.com -d www.aa.com -d user.aa.com
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```
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# Use DNS mode:
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Support the `dns-01` challenge.
```bash
acme.sh --issue --dns -d aa.com -d www.aa.com -d user.aa.com
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```
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You should get the output like below:
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```
Add the following txt record:
Domain:_acme-challenge.aa.com
Txt value:9ihDbjYfTExAYeDs4DBUeuTo18KBzwvTEjUnSwd32-c
Add the following txt record:
Domain:_acme-challenge.www.aa.com
Txt value:9ihDbjxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Please add those txt records to the domains. Waiting for the dns to take effect.
```
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Then just rerun with `renew` argument:
```bash
acme.sh --renew -d aa.com
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```
Ok, it's finished.
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# Automatic DNS API integration
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If your DNS provider supports API access, we can use API to automatically issue the certs.
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You don't have do anything manually!
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### Currently acme.sh supports:
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1. Cloudflare.com API
2. Dnspod.cn API
3. Cloudxns.com API
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4. AWS Route 53, see: https://github.com/Neilpang/acme.sh/issues/65
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5. lexicon dns api: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
(DigitalOcean, DNSimple, DnsMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
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##### More APIs are coming soon...
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If your DNS provider is not on the supported list above, you can write your own script API easily. If you do please consider submitting a [Pull Request ](https://github.com/Neilpang/acme.sh/pulls ) and contribute to the project.
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For more details: [How to use dns api ](dnsapi )
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# Issue ECC certificate:
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`Let's Encrypt` now can issue **ECDSA** certificates.
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And we also support it.
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Just set the `length` parameter with a prefix `ec-` .
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For example:
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### Single domain ECC cerfiticate:
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```bash
acme.sh --issue -w /home/wwwroot/aa.com -d aa.com --keylength ec-256
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```
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SAN multi domain ECC certificate:
```bash
acme.sh --issue -w /home/wwwroot/aa.com -d aa.com -d www.aa.com --keylength ec-256
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```
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Please look at the last parameter above.
Valid values are:
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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.)**
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# Under the Hood
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Speak ACME language using shell, directly to "Let's Encrypt".
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TODO:
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# Acknowledgment
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1. Acme-tiny: https://github.com/diafygi/acme-tiny
2. ACME protocol: https://github.com/ietf-wg-acme/acme
3. letsencrypt: https://github.com/letsencrypt/letsencrypt
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# License & Other
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License is GPLv3
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Please Star and Fork me.
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[Issues ](https://github.com/Neilpang/acme.sh/issues ) and [pull requests ](https://github.com/Neilpang/acme.sh/pulls ) are welcomed.
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