How to remove all numbers, spaces and dashes at the beginning of a string - in any order?

Question

linux

Hello everyone,

I want to optimize this terrible string so that it only starts with a letter

extracted_file_name=$(printf '%s' "$extracted_file_name" | sed -e 's/^*//' | sed -e 's/^[0-9]*//g' | sed -e 's/^*//' | sed -e 's/^[0-9]*//g' | sed -e 's/^*//')

works, but ugly
Vadim

Answer 1

it’s easier to go from the opposite, first remove everything that is not a letter
sed -e 's/^[^[:alpha:]]\+//'

Answer 2

in fact, probably so ... although not quite!

extracted_file_name=$(printf '%s' "$extracted_file_name" | sed -e 's/^*[0-9]*[-]*//')

for example, such cases do not take into account
extracted_file_name=" --- 123 234 abscdfgdgdfg.txt"