soviele Tage bis Ostern

tage_bis_ostern.sh

#!/bin/bash

# Get today's date in seconds since epoch
today=$(date +%s)

# Get Easter date in YYYY-MM-DD format using ncal -e
#easter_date=$(ncal -e | awk '{print $NF}')

# Convert Easter date to seconds since epoch
# easter=$(date -d "$easter_date" +%s 2>/dev/null)
easter_ncal="$(LC_ALL=en_US ncal -e)"
easter="$(date -d $easter_ncal +%s 2>/dev/null)"

# LC_ALL=en_US.utf8 ncal -e

# Check if the conversion was successful
if [ $? -ne 0 ]; then
    echo "Fehler beim Konvertieren des Osterdatums. Überprüfen Sie die Regional- oder Systemkonfiguration."
    exit 1
fi

# Calculate the difference in seconds, then convert to days
diff=$(( (easter - today) / 86400 ))
#diff="($easter - $today)/86400"
#diff=$(echo "$diff" | bc -l)
# Print the result
if [ "$diff" -ge 0 ]; then
    echo "Es sind $diff Tage bis Ostern."
else
    echo "Ostern ist in diesem Jahr bereits vorbei."
fi