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.
Your help is greatly appreciated.
21520041
21520041
1210050
1210080
1210080
1690061
1210080
11210080
21510011
Kind regards
tien
