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Simple String Manipulation

 
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# 1  
Old 07-06-2010
Simple String Manipulation
Hi,

In a BASH script I have a string variable that will be of the form:

Code:
[0-9]D

OR
Code:
[0-9][0-9]D

OR
Code:
[0-9][0-9][0-9]D

ie either a 1, 2, or 3 digit number followed by the letter D. I would like to simply remove the letter D (or alternatively trim the variable up to the D) so that all that remains is a number. How can I do this?

Mike
# 2  
Old 07-06-2010
Like this?
Code:
$> echo 123D| sed 's/[[:digit:]]//g'
D
$> echo 123D| sed 's/[[:alpha:]]//g'
123

# 3  
Old 07-06-2010
tr command
Code:
echo 1D | tr -d "D"
1

echo 12D | tr -d "D"
12

# 4  
Old 07-06-2010
Thank you very much!
 
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