How can I delete all lines before a specific string from a number of files

Question

I have n files, like:

file1:

1aaa
2eee

Test        XXX
Hanna
Lars 

file2:

1fff
2ffffd
3zzz

Test        XXX
Mike
Charly         


        

Answer 1

You can do it with bash ( eg for 1 file)

t=0
while read -r line
do
    [[ $line =~ Test.*XXX ]] && t="1"
    case "$t" in
     1) echo "$line";;
    esac
done < file > tempo && mv tempo file

Use a for loop as necessary to go through all the files