windows 7 - How to delete files with specified text in their names?

I have a folder on my computer in which I have a lot of .jpg files.
I want to filter out all files that have a specific part in their name, for example:

We have a folder which contains files A.jpg, B.jpg, C_bad.jpg, D_bad.jpg, etc.

I want to delete every file that has "_bad" in its name.
Is something like this even possible? Or do I have to delete all these files manually?

Answer

I want to filter out all files that have a specific part in their name

You can do this with wildcards.

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From a command line

To display matching files:

dir *_bad.jpg

To delete matching files:

del *_bad.jpg

Use the /s option to match files in subdirectories as well as the current directory.

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From Explorer

To display matching files:

• enter *_bad.jpg in the search box

To delete matching files:

• enter *_bad.jpg in the search box, select the results and press Delete or Del
  

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Further reading

wildcards