On 2006-05-25, Tien Pham <[EMAIL PROTECTED]> wrote:
> Dear all
>
> I have a very large file containing 7000 lines of data in a single column.
> Below is a sample. Many of them are 7 digit numbers and others are 8 digit
> numbers. For those 7 digit numbers, I need to add number 0 at the beginning
> of it. Can someone please show me a command to do it all in one hit? Those
> 7 digits numbers have no regular patterns, except that they have 7 digits,
> and the order of all numbers in the column has to remain unchanged.
g/^\d\{7}$/s/^/0/
HTH,
Gary
--
Gary Johnson | Agilent Technologies
[EMAIL PROTECTED] | Wireless Division
| Spokane, Washington, USA
