ULM Replacement ?

[Hash-IT]

I have been experimenting with uniq.exe within UnxUpdates in windows and I am a little confused.

I tried uniq.exe like this...

uniq.exe -u test.txt

My test file has the following text ...

Code:

a
a
a
a
s
d
f
g
h

The output was ...

Code:

s
d
f
g
h

I was expecting to remove some a's but not all of them !! I expected ...

Code:

a
s
d
f
g
h

There doesn't seem to be anything about it in the --help of uniq.exe.