#!/bin/bash

echo 'Removing all entries in call graph dot files without'
echo 'the prefix CGTest...'

for dfile in `ls *.dot`
do

# we definitely want the first line of
# the dot file, so just send it to the
# temporary file
sed -n '1,1 p' <$dfile >$dfile.temp

# now take only the directed edge statements
# from the dot file that have the pattern CGtest
sed -n '/CGTest/ p' <$dfile >>$dfile.temp

# then throw the closing bracket at the end
echo '}' >>$dfile.temp

# and then clobber the old file
mv $dfile.temp $dfile
done