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In Linux, you can use the rename command to delete strings from multiple filenames. Here’s an example:

If you want to remove the string “_old” from all the filenames in a directory, you can use the following command:

rename 's/_old//' *

This command will replace “_old” with nothing in all filenames in the current directory.

In Python, you can use the os module to rename files. Here’s an example:

import os

directory = "/your/directory/path/"

for filename in os.listdir(directory):
    if "_old" in filename:
        new_filename = filename.replace("_old", "")
        os.rename(directory + filename, directory + new_filename)

This Python code will check all the filenames in the directory specified by directory and remove “_old” from filenames that contain it. The modified filename is then used to rename the file using the os.rename function.