dockerfile.run

xcal

a graphical calendar with memos and reminder alarms

Debian

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

Ubuntu

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

Kali Linux

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

Raspbian

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

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