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Generator/log_gen.sh

Last active October 18, 2021 22:05
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DD-WRT syslog HTML generator
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log_gen.sh
#!/bin/sh
## DD-WRT Log HTML generator
## Instructions:
## put script in /tmp/www/
## chmod 700 /tmp/www/log_gen.sh
## Add cron job in Administrations panel
## */15 * * * * root /tmp/www/log_gen.sh
## Page available in http://<routerip>/user/syslog.html
## Change nline for number of generated lines
# Options
nlines="500"
in="/var/log/messages"
out="/tmp/www/syslog.html"
# Leave me alone
name=$(nvram get router_name);
date=$(date)
tail -n $nlines $in | awk -v NAME="$name" -v DATE="$date" 'BEGIN {
print "<html><title>"NAME" - Syslog</title>"
print "<head><style type=\"text/css\"> \
body, td { font-size: 12px; font-family: \"tahoma\", \"sans-serif\", \"arial\", \"helvetica\"; \
color: #5f5f5f; background-color: #ffffff;} \
td.hd { font-weight: bold; background-color: #f5f5f5;} \
</style></head>"
print "<center><b>System Log</b><br>(Generated: "DATE")<br><br><table border=1 cellspacing=\"0\" cellpadding=\"1\">"
print "<tr><td class=\"hd\">Date/Time</td><td class=\"hd\">Severity</td><td class=\"hd\">Messages</td></tr>"
}
{
if ( $5 ~ /.crit/ || $5 ~ /.alert/ || $5 ~ /.err/ ) COLOR="red";
else COLOR="#5f5f5f";
print "<tr>"
print "<td>"$1" "$2" "$3"</td>"
print "<td style=\"color:"COLOR";\">"$5"</td>"
print "<td>"
}
{
for (i=6; i<NF; i++) printf $i " ";
print $NF;
}
END {
print "</td></tr>"
print "</table></center>"
print "</html>"
}' > $out
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