file.txt

102345  1000 200  300
...............................
..............................
102346  2000 300  4000


In above file the 4th row, 1 st column valu to be increment by 1 
and rest of the values are same for 1000 lines. 

102347  2000 300  4000

102348  2000 300  4000

sed '4,4 {
s/102346/102347/
}' file

Quote:

Originally Posted by mohan705 Hi I have flat file with 100 records ,I need to fabricate data into flat file . ex: Code: file.txt 102345 1000 200 300 ............................... .............................. 102346 2000 300 4000 In above file the 4th row, 1 st column valu to be increment by 1 and rest of the values are same for 1000 lines. 102347 2000 300 4000 102348 2000 300 4000

Code:

awk 'NR == 4 { $1 = $1 + 1 } { print }' file.txt

file.txt

102345  1000 200  300
...............................
..............................
102346  2000 300  4000


I am expecting o/p like this

file.txt

102345  1000 200  300

102346  200 300 400

102347  200 300 400

102348  200 300 400

102349  200 300 400
.............................
..............................
102400  200 300 400

You haven't explained the process by which this:

Quote:

Originally Posted by mohan705 Code: 102345 1000 200 300 ............................... .............................. 102346 2000 300 4000

is turned into this:

Quote:

Code: 102345 1000 200 300 102346 200 300 400 102347 200 300 400 102348 200 300 400 102349 200 300 400 ............................. .............................. 102400 200 300 400

Which lines do you want incremented?

Do you want more than one line of output for any line of input?

102345  1000 200  300

102346  200 300 400

102347  200 300 400

102348  200 300 400

102349  200 300 400
.............................
..............................
102400  200 300 400

Quote:

Originally Posted by mohan705 sorry for not explained properly,I want to increment 1st column

I repeat: Which lines do you want incremented?