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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
mail -s SUBJECT ADDRESS... < BODY
mail -h
EOF
}
help() {
cat <<-'EOF'
Options:
-s SUBJECT the email subject
-h, --help show this message
ADDRESS the email addresses to send the email to
BODY the text to be sent as the body
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
while getopts 's:h' flag; do
case "$flag" in
s)
SUBJECT="$OPTARG"
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
assert_arg() {
if [ -z "$1" ]; then
{
printf 'Missing %s.\n' "$2"
printf '\n'
usage
} >&2
exit 2
fi
}
assert_arg "${SUBJECT:-}" '-s SUBJECT'
assert_arg "${1:-}" 'ADDRESS'
printf 'Subject: %s\n\n%s' \
"$(echo "$SUBJECT" | tr -d '\n')" \
"$(cat)" |
msmtpq -a euandreh "$@"
|
