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ckunte/nd.sh

Created July 14, 2019 03:44
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Count days from start to end dates
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nd.sh
#!/usr/bin/env bash
# nd.sh -- count days from start to end dates input inline
# 2019 ckunte
if [ -z "$*" ]; then
echo 'Include "start" "end" dates inline, e.g.,'
echo '$ bash nd.sh "1 Apr 2018" "31 Dec 2018"'
exit 0
fi
start_date=$1
end_date=$2
sdate=$(date --date="$start_date" '+%s')
edate=$(date --date="$end_date" '+%s')
days=$(( (edate - sdate) / 86400 ))
echo "$days days between $start_date and $end_date"
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