docs: update readme with more details

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Alex Kelly 2021-10-01 10:14:03 -04:00
parent 386a983b79
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# Changelog
## v0.3.0 (2021-10-01)
#### New Features
* add option to get host names from an external file
#### Refactorings
* clean-up for pylint
#### Docs
* update docs with a _little_ more detail
#### Others
* fix spelling
* refactor test code for pep8
* update tests to handle all branches
Full set of changes: [`v0.2.0...v0.3.0`](https://git.admin.franklin.edu/tins/checkcert/compare/v0.2.0...v0.3.0)
## v0.2.0 (2021-09-30)
#### New Features

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This utility was based off of [this
gist](https://gist.github.com/gdamjan/55a8b9eec6cf7b771f92021d93b87b2c).
I have wrapped the logic in a click-based CLI and added command-line options
checkcert has the logic of that gist wrapped in a click-based CLI and added command-line options
(checkcert --help to see them)
# Installation
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## from PyPi
pip install checkert
# Usage
When you run `pip install checkcert`, you will get a `checkcert` command. To
show all the options, simply run `checkcert --help` to get the most-current list
of commands and options.
### Basic Usage
The basic usage is `checkcert example.com`
### Check cert with an alternate port
Anywhere you specify the host, you may use the format `host:port` to specify an
alternate port. If no port is specified, 443 will be used. To check something
running on port 8081 for example, execute `checkcert example.com:8081`
### Multiple domains
checkcert will take all domains specified on the command line. Multiple values
may be specified as `checkcert example.com www.example.com alt.example.com:444`
### Domain list from a file
checkcert can be instructed to pull the list of domains from a file instead with
the --filename option. The file contents will just be a domain per line
(specified in host:port format, or just host to default to port 443)
create a file named domains.txt with contents like the following
```
example.com
www.example.com
alt.example.com:444
```
Then execute `checkcert --filename domains.txt`