Retrieving Distinct text from a file

[bengalliboy]

Would it be possible to read/retreave distinct values of a text from a text file?
MY file is:
ABCD12345
ABCD234
CDGX345
CSGX456

I am using cut command that is reading from 1st position to 4th position some thing like this:
cut -c1-4 my_text_file
This does retrieve all the rows but not distinct:
ABCD
ABCD
CDGX
CDGX
Is there a way to group by this text or get the distinct value of this text? TIA

 

[olded]

Hi:

Pipe your cut to the uniq command:

cut -c1-4 my_text_file|uniq

Regards,


Ed