Removing Zeros in front of a number

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# 1  
Removing Zeros in front of a number

Hi All,

I would like to trim the following input.
My condition is as long as there's a zero on the left of the number, remove the zeros. Can anybody help me by using sed or awk ?

0011 => change to => 11
0333 => change to => 333
4444 => No change => 4444
# 2  
echo "0011" | sed "s/^0*//"

# 3  
echo 0011 | awk '{print $0+0}'

# 4  
zsh 4.3.4% printf "%d\n" "0011" "0333" "4444"

# 5  



cat filename | sed 's/^0*//'

# 6  
Originally Posted by summer_cherry


cat filename | sed 's/^0*//'

no need for cat.
# 7  
Thanks all !
It works
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