How to put the same character in the beginning of all rows using regex?

Question

I have a list of 10 digit numbers in a txt file. I want to put the same character in the beginning of all rows using regex, without changing the numbers.

I also want to put the character at the end of all rows

For example a quote character '

Set of numbers as sample:

7101756638
7101756639
7107429322
7107429323
7108270737
7109747487

When I do this:

• Search for: \d{10,10}
• Replace with: '\d{10,10}'

I get this:

'd{10,10}'
'd{10,10}'
'd{10,10}'
'd{10,10}'
'd{10,10}'
'd{10,10}'

Answer 1

• You can use (?=^[0-9]{10}$) and replace it with '.
• You can also use ^([0-9]{10})$ and then replace it with '$1.

Notes:

• ^: start anchor.
• ([0-9]{10}): capture group 1, including 10 digits.
• $: end anchor.
• (?=): positive lookahead.

Answer 2

• Ctrl+H
• Find what: ^\d+$
• Replace with: '$0'
• TICK Wrap around
• SELECT Regular expression
• Replace all

Explanation:

^           # beginning of line
\d+         # 1 or more digit. you can use \d{10} if there is 10 digits or .+ to match any character
$           # end of line

Replacement:

'$0'        # the whole match surounded with single quotes

Screenshot (before):

Screenshot (after):