Delete some files using the linux Command line

I have many files in a folder. with the .pdf format

example:

1. data1_signed.pdf
2. data1.pdf
3. data2_signed.pdf
4. ......
5. .....

what command to use to delete files simultaneously which are not * _signed.pdf on ubuntu server.

thank you

https://stackoverflow.com/questions/66084431/delete-some-files-using-the-linux-command-line February 07, 2021 at 12:01PM