This article covers the different methods of finding files in Debian 10. To find a file in Debian:Use the Locate command1. Debian and Ubuntu sudo apt-get install locate.2. CentOS yum install locate.3. Prepare locate command for first use. To update the mlocate.db database before first use, run: sudo updatedb. To use locate, open a terminal and type locate followed by the file name you are looking for.To locate a file in Linux:1. find . - name thisfile.txt. If you need to know how to find a file in Linux called thisfile.2. find /home -name *.jpg. Look for all . jpg files in the /home and directories below it.3. find . - type f -empty. Look for an empty file inside the current directory.4. find /home -user randomperson-mtime 6 -iname ".db".To find packages in Debian:You can also search for a package using the aptitude Ncurses user interface. 1. Type 'aptitude' in the terminal and the following interface will be displayed in the window. 2. To search for a package, press '/' and then type the package name into the search bar.How to use grep to find a file?The grep command searches through the file, looking for matches to the pattern specified. To use it type grep , then the pattern we're searching for and finally the name of the file (or files) we're searching in. The output is the three lines in the file that contain the letters 'not'.To list files in Linux:The easiest way to list files by name is simply to list them using the ls command. Listing files by name (alphanumeric order) is, after all, the default. You can choose the ls (no details) or ls -l (lots of details) to determine your view.Which command have more searching options to search a file in file system in Linux?Grep is a Linux / Unix command-line tool used to search for a string of characters in a specified file. The text search pattern is called a regular expression. When it finds a match, it prints the line with the result. The grep command is handy when searching through large log files.grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search for a regular expression and print matching lines), which has the same effect.To grep recursively in a directory:To recursively search for a pattern, invoke grep with the -r option (or --recursive ). When this option is used grep will search through all files in the specified directory, skipping the symlinks that are encountered recursively.