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Remove pipes from end of file

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# 1  
Old 07-29-2013
Remove pipes from end of file
Hello all,

I have a file like this

Code:
AA||
BB||
CC||

I want to remove the pipelines (||) from the last occurrance of them in file.
that means after removal my file should be like this
Code:
AA||
BB||
CC

how can we achieve this?

I tried this at my end

Code:
sed -n '/||/{$p}' file_name.txt

But this gives no reslut
# 2  
Old 07-29-2013
If last occurrence is in last line try:
Code:
sed '$ {s/[|]*$//;}' infile

# 3  
Old 07-29-2013
Hello this command in not working.
It gives me contents of the file

Code:
AA||
BB||
CC||

---------- Post updated at 09:00 PM ---------- Previous update was at 08:42 PM ----------

Hi,
The above command is working fine
thanks
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