Maybe not what the article is exactly talking about, but `cal` will give you a calendar in terminal. `cal -3` will give you each surrounding month, and `cal 2022` will give you the full year
I have a shell function I use all the time to keep track of both calendar and timezones where our teams are located
now() {
cal -3
echo
echo -n "Local: "
date --rfc-3339=s
echo -n "UTC: "
date -u --rfc-3339=s
echo -n "New York "
TZ='America/New_York' date --rfc-3339=s
echo -n "London: "
TZ='Europe/London' date --rfc-3339=s
echo -n "New Zealand: "
TZ='Pacific/Auckland' date --rfc-3339=s
}
Often I use cal to find the previous or next month. I never understood why two parameters it assumes `cal mm yyyy` but when one parameter is provided assumes `cal yyyy` instead of `cal mm`.
ie, I just want to see April of this year: but `cal 4` returns Jan-Dec 0004 CE <!>
Which cal? It is a relatively simple program that has seen many implementations and extensions. The cal I had in mind was the version from the util-linux package, it is commonly found in Linux distributions and supports full or abbreviated month names as arguments.
One of my earliest computing-adjacent exposures was going into my dad's office as a kid. Besides getting to type random things on punch-cards, we'd typically bring home these line-printer calendars with a Snoopy (or whatever) ASCII-art pic at the top.
