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#!/bin/sh
set -e
dmotd="$1"
ret=0
if [ -z "$dmotd" ]; then
echo "Usage:"
echo " $0 <dynamic motd news file>"
exit 1
fi
if [ ! -s "$dmotd" ]; then
echo "WARNING: $dmotd is zero-sized and will be ignored."
exit 0
fi
lines=$(wc -l < "$dmotd")
if [ "$lines" -gt 10 ]; then
echo "ERROR: $dmotd contains more than 10 lines ($lines)"
ret=1
fi
line_max_len=$(wc -L < "$dmotd")
if [ "$line_max_len" -gt 80 ]; then
echo "ERROR: $dmotd contains longer than 80 character line ($line_max_len)"
ret=1
fi
first_line="$(head -n 1 "$dmotd")"
if ! echo "$first_line" | grep -q '^ \* '; then
echo "ERROR: $dmotd first line does does not match recommended format, but is:"
echo "\"$first_line\""
ret=1
fi
last_line="$(tail -n 1 "$dmotd")"
if ! echo "$last_line" | egrep -q '( https://| apt | snap )'; then
echo "ERROR: $dmotd last line does does not match recommended format, but is:"
echo "\"$last_line\""
ret=1
fi
exit $ret
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