Shell Programming and Scripting

 
Title 123
A
B
C
D
E
 
Title 098
 
Title 567
Z
Y
X

 
Title 123
A
B
C
D
E
 
Title 567
Z
Y
X

$ cat filter.sh
#!/bin/bash
# sorry, I'm basher ...
# usage:
# cat oldfile | ./filter.sh > newfile

C=0
TITLE='Title ???'
while read LINE; do
        if [ -z "`echo "$LINE" | grep -i "Title"`" ]; then
                if [ ! -z "$LINE" ]; then
                        if [ $C == 0 ]; then
                                echo "$TITLE"
                        fi
                        C=$((C + 1))
                fi
                echo "$LINE"
        else
                TITLE="$LINE"
                C=0
        fi
done

sed "/Title/{N;/\n *$/d;}" file