The command searches a database of filenames for the name or name fragment that you specify.

The answer is Find command

The Linux find command is a very powerful tool that searches the entire file system to find files according to the search criteria. Not only are you able to locate files with the Find command, but you can also perform actions on these files. In addition, the find command is also used to execute other Linux commands like grep, rm, mv on the files you find. This makes the Find command even more powerful.

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