[](https://microbadger.com/images/linuxserver/oscam "Get your own version badge on microbadger.com")
[Oscam](http://www.streamboard.tv/oscam/) is an Open Source Conditional Access Module software used for descrambling DVB transmissions using smart cards. It's both a server and a client.
Our images support multiple architectures such as `x86-64`, `arm64` and `armhf`. We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#manifest-list) and our announcement [here](https://blog.linuxserver.io/2019/02/21/the-lsio-pipeline-project/).
If you want to pass through a smart card reader, you need to specify the reader with the `--device=` tag. The method used depends on how the reader is recognized.
The first is /dev/ttyUSBX. To find the correct device, connect the reader and run `dmesg | tail` on the host. In the output you will find /dev/ttyUSBX, where X is the number of the device. If this is the first reader you connect to your host, it will be /dev/ttyUSB0. If you add one more it will be /dev/ttyUSB1.
If there are no /dev/ttyUSBX device in `dmesg | tail`, you have to use the USB bus path. It will look similar to the below.
`/dev/bus/usb/001/001`
The important parts are the two numbers in the end. The first one is the Bus number, the second is the Device number. To find the Bus and Device number you have to run `lsusb` on the host, then find your USB device in the list and note the Bus and Device numbers.
Here is an example of how to find the Bus and Device. The output of the lsusb command is below.
`Bus 002 Device 005: ID 076b:6622 OmniKey AG CardMan 6121`
The first number, the Bus, is 002. The second number, the Device, is 005. This will look like below in the `--device=` tag.
`--device=/dev/bus/usb/002/005`
If you have multiple smart card readers, you add one `--device=` tag for each reader.
Docker images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate `<external>:<internal>` respectively. For example, `-p 8080:80` would expose port `80` from inside the container to be accessible from the host's IP on port `8080` outside the container.
## Environment variables from files (Docker secrets)
You can set any environment variable from a file by using a special prepend `FILE__`.
As an example:
```
-e FILE__PASSWORD=/run/secrets/mysecretpassword
```
Will set the environment variable `PASSWORD` based on the contents of the `/run/secrets/mysecretpassword` file.
## Umask for running applications
For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional `-e UMASK=022` setting.
Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up [here](https://en.wikipedia.org/wiki/Umask) before asking for support.
When using volumes (`-v` flags), permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user `PUID` and group `PGID`.
[](https://mods.linuxserver.io/?mod=oscam "view available mods for this container.")
We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to enable additional functionality within the containers. The list of Mods available for this image (if any) can be accessed via the dynamic badge above.
