shell - Linux - How to replace the last few characters of a file name with a string

Question

I have list of files and each file name ends with (+1) and I want to replace that (+1) of the filename with date

Ex: ABC.DEF(+1)

Looking for a simple solution which replaces the file name as below:

ABC.DEF.20200127

question from:https://stackoverflow.com/questions/65929663/linux-how-to-replace-the-last-few-characters-of-a-file-name-with-a-string

Answer 1

I am not sure about the extension of your file, so I just considered .txt

for file in *.txt;   
do   
    mv "$file" "${file%????.txt}."`date +"%y%m%d"`""  
done