How to removing leading section in bash

Question

How can I remove parts of a string up to a certain character?

Ex.) If I have the string testFile.txt.1 and testFile.txt.12345 how can I remove the 1 and 12345?

EDIT: I meant to remove and throw away the first part of a string up to a certain character and keep the end of it.

Answer 1

using just bash facilities

$ s=testFile.txt.1
$ echo ${s%.*}
testFile.txt

$ s=testFile.txt.12345
$ echo ${s%.*}
testFile.txt

to remove before leading zero

$ echo ${s#*.}
txt.12345

Other method, you can split your string up using IFS

$ s=testFile.txt.12345
$ IFS="."
$ set -- $s
$ echo $1
testFile
$ echo $2
txt
$ echo $3
12345