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make expdays more portable

This commit is contained in:
xfnw 2022-03-31 13:08:08 -04:00
parent 71605ae241
commit 34c8279fd5
1 changed files with 9 additions and 1 deletions
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10
bin/expdays
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@ -2,4 +2,12 @@
dat=$(openssl x509 -noout -enddate | cut -d= -f2)
echo $(( ($(date -d "$dat" '+%s') - $(date '+%s')) / 86400 ))
if [ "$(uname)" = "OpenBSD" ]
then
echo $(( ($(date -j -f "%b %d %T %Y %z" "$dat" "+%s") - $(date '+%s')) / 86400 ))
elif [ -h /bin/date ] # date is symlinked, assume its busybox
then
echo $(( ($(date -D "%b %d %T %Y %z" -d "$dat" "+%s") - $(date '+%s')) / 86400 ))
else
echo $(( ($(date -d "$dat" '+%s') - $(date '+%s')) / 86400 ))
fi