[SOLVED] extract substring until first digit

Issue

I have the following string:

test1234a or test1234 for example and I want to extract only test from that string.

I tried the follwing

echo "Test12h" | sed -e 's/[0-9]\*$//' but is not working. 

Is there any possibility to extract the substring until first digit?

Please let me know what I miss.

Thank you

Solution

Could you please try following.

sed 's/\([^0-9]*\).*/\1/' Input_file

OR

sed 's/[0-9][0-9a-zA-Z]*//' Input_file

Answered By - RavinderSingh13