sed string manipulation

speedieB · #1 (**permalink**) 08-11-2006

hi
I am using sed to split a string
this string is 11byteabc I would like to just get the numeric digits.

Code:

echo "11byteabc" | sed 's/*[a-z]//

returns 11byteabc

only solution that works is repeating [a-z] number of times for the letters which is pointless

grateful for any suggestions
thanks

aigles · #2 (**permalink**) 08-11-2006

The correct syntax for the regex is :

Code:

echo "11byteabc" | sed 's/[a-z]//g'

or

Code:

echo "11byteabc" | sed 's/[^[:digit:]]//g'

Jean-Pierre.

speedieB · #3 (**permalink**) 08-11-2006

thank you Jean-Pierre for the fast solution

ranj@chn · #4 (**permalink**) 08-11-2006

echo "11byteabc" | tr -cd [:digit:]

halola85 · #5 (**permalink**) 11-23-2008

Hey everybody

I need some help on how to order the data in file such as a file have first name last name and city and i would like to order them to in the same order by using sed

thanks alot for your time

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