@ raj_saini20

Say a file (named as values) has following data (i have given only 2 columns for simplication) with a header as :

The values of the simulation are as follows with the unique number and potential as

unique number potential

1 5.63
2 9.62
3 0.23
4 5.01
5 6.36
6 2.40
7 5.62
8 1.24
9 4.23
10 7.25
11 1.98
. .
. .
. .
. .
100 7.04

Now , i need to separate above file into 10 files based on unique number with range from 1 to 10 , 11 to 20 ..... 91 to 100 and include the common header to all these 10 files .
I should do this by using "awk and cat" command.

---------- Post updated at 01:09 AM ---------- Previous update was at 12:58 AM ----------

@CarloM : I am just trying to first split the files into 10 number based on their unique number. So , I am first using the "awk" command and put it into a new 10 files with names as 0 1 2 ...9. That's why is use $i in the last of the awk .

Code:

for (i=0;i<=9;i=i+1)
 do
   awk'{if(($i*1000000<$1)&&($1<($i+1)*1000000)){print$0}}' values > $i

Then, i wish to add header to all my newly created files (i.e) to files named 0 1 2 .....9 using the cat command. since , i have referred $i as the new file in the above awk command, i am doing same in the cat command also .

Code:

cat headeronly $i > a$i
done