Is anyone can help me to add zeros in a string within the file?
For example: I have test.dat and it contains like below:
1 FirstName LastName A +2015042113:00:00000285000FSCRD INV 0
2 FirstName LastName B +2015042220:00:00000331000SSESA INV 0
And I would like to create a shell script to edit one of the string in the fie, by inserting three (3) zeros in the middle of the string.
So the output expected will be: I bold the added three zeros as below.
01 FirstName LastName A +2015042113:00:00000000285000FSCRD INV 0
02 FirstName LastName B +2015042220:00:PM000000331000SSESA INV 0
You can use
sed 's/\(:..:..\)/\1000/' test.dat
it looks for the pattern
:..:.. (dot is any character, so it look for "colon,any char,any char,colon,any char,any char") and add 3 zeros to it