LinuxQuestions.org - server load script cgi

Well, you could modify the bwbar to display load instead of network usage.

You can also create a bar-like chart using just HTML. For example, this shell CGI script extract is one I created for status on my firewall, which is then included by the target page:

Code:

#-----------------------------------------------------------

# Create a bar chart to relate the rolling number of entries

# in the datafile to virus/hack activity

#-----------------------------------------------------------

ENTRIES=`/bin/cat /var/www/html/datafile | /usr/bin/wc -l`

REALENTRIES=$ENTRIES

if [ $ENTRIES -gt 450 ]

then

  ENTRIES=450

fi

PAD=$((450-$ENTRIES))

BAR="darkgreen"

if [ $ENTRIES -ge 180 ]

then

  BAR="yellow"

fi

if [ $ENTRIES -ge 250 ]

then

  BAR="darkred"

fi

echo "<font color=blue>"                                                        > /var/www/html/virus.html

echo "72-hour rolling automatic firewall subnet block list summary:"          >> /var/www/html/virus.html

echo "</font>"                                                                >> /var/www/html/virus.html

echo "<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0>"                            >> /var/www/html/virus.html

echo "<TR bgcolor=#AAAAAA><TH align=left WIDTH=150>Virus/Hack Activity:</TH>"  >> /var/www/html/virus.html

echo "  <TH align=left WIDTH=150><font color=darkgreen>Low</TH>"              >> /var/www/html/virus.html

echo "  <TH align=left WIDTH=150><font color=yellow>Normal</TH>"              >> /var/www/html/virus.html

echo "  <TH align=left WIDTH=150><font color=darkred>High</TH>"              >> /var/www/html/virus.html

echo "</TR>"                                                                  >> /var/www/html/virus.html

echo "<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0>"                            >> /var/www/html/virus.html

echo "<TR bgcolor=#AAAAAA><TH align=right WIDTH=150>${REALENTRIES}&nbsp;</TH>" >> /var/www/html/virus.html

echo "  <TH bgcolor=${BAR} align=left WIDTH=${ENTRIES}>&nbsp;</TH>"          >> /var/www/html/virus.html

echo "  <TH bgcolor=#AAAAAA align=left WIDTH=${PAD}></TH>"                    >> /var/www/html/virus.html

echo "</TR>"                                                                  >> /var/www/html/virus.html

echo "</TABLE>"                                                                >> /var/www/html/virus.html

/bin/chmod 644 /var/www/html/virus.html

/bin/chown nobody.nobody /var/www/html/virus.html

You can see the result here. The bar changes from green to yellow to red as thresholds are passed, and the bar gets longer. It's a very simplistic way of doing it, but it gets the job done.