Thread: how can i truncate this

hi all
i have an output like this

Code:

ID=123:one=a:[email protected]:three=789:four=:five=123 ID=123:one=aa:[email protected]:three=:four=1111111111:five=
:/

i would like to truncate this write in a file (file.txt) as

Code:

//begin
a
[email protected]
789

123
//begin
aa
[email protected]

11111111

//begin

how can do this

can you please help em
thank you in advance