Combine every 5 lines

Question

I need to combine every 5 lines into 1. I have a wordlist dictionary which contains 1000 lines example:

line 1
line 2
.
line 1000

I need to combine every 5 lines:

line 1 line 2 line 3 line 4 line 5
.
line 996 line 997 line 998 line 999 line 1000

Answer 1

• Ctrl+H
• Find what: ^(.+)\R(.+)\R(.+)\R(.+)\R
• Replace with: $1 $2 $3 $4
• check Wrap around
• check Regular expression
• DO NOT CHECK . matches newline
• Replace all

Explanation:

^       : beginning of line
(.+)    : group 1, 1 or more any character 
\R      : any kind of line break
        : same pattern occurs 4 times.

Replacement:

$1      : content of group 1
        : a space
        : same for other groups