Adding an additional blank field to a file

Shell Programming and Scripting
1

Hi,
I have the following file, I'd like to add an additional blank field to this file
This is a tab delimited file, I have tried the same thing on excel, but looking for a unix solution.

Here is my input:

Country  Postal  Admin4  StreetBaseName  StreetType
HUN      2243    K�ka    D�zsa Gy�rgy   �t
HUN      5475    Cs�pa   4511

I'm expecting this output:

Country  Postal  Admin4  HNO  StreetBaseName  StreetType
HUN      2243    K�ka        D�zsa Gy�rgy   �t
HUN      5475    Cs�pa       4511
2

Is this file tab-separated?

3

yes it is a tab seperated file

4

You can "cheat" by putting two fields in one.

awk -v FS="\t" -v OFS="\t" 'NR==1 { $3=$3 "\tHNO"; print; next}; { $3=$3 "\t" ; print }' filename > outputfile