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To remove the extra spaces at the end of each line in a file


 
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# 1  
To remove the extra spaces at the end of each line in a file

I have a file of about 10k records and eace line is having an extra space of 5 byte at the end.. Iwant to remove the extra spaces at the end of each line.. Can someone please help me out.. I tried using sed command and its not working... can someone please help me out.
# 2  
try sth like

Code:
sed 's/[ \t]\+$//' file

# 3  
Can you explain this command what [ \t]\+$ this does?
# 4  
[ \t] -- Space or Tab \t.

\+ -- Matches One or More instances.

$ -- Check for the Instance ending with pattern.

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