dockerfile.run

mkxlax

send keyboard input to multiple X11 windows

Debian

RUN apt-get update && \
    apt-get install -y xlax

Ubuntu

RUN apt-get update && \
    apt-get install -y xlax

Kali Linux

RUN apt-get update && \
    apt-get install -y xlax

Raspbian

RUN apt-get update && \
    apt-get install -y xlax

click the source code to copy install mkxlax on any operating system with command-not-found.com