Without it just the file name appears: printf "%s" ABC*Īssuming you run the command within the directory in which the files exist.A step-by-step guide to the best practices for setting up a WSL development environment. "/path/to/files/" remains in the output if you entered it that way when you ran the 'printf' command. If you need line breaks after each instance: printf "%s\n" /path/to/files/ABC* Returns: /path/to/files/ABC /path/to/files/ABC123 If you going to use this in a script the output of 'printf' will not contain a new line character until the end of the output stream as such: printf "%s" /path/to/files/ABC* ![]() In that case using 'printf' with glob pattern matching is considered safe. From the command line using 'ls' in place of 'printf' here is a safe alternative however, depending on who's opinion you agree with, 'ls' is not safe for use in a script. This will match all occurrences of files starting with "ABC" such as "ABC", "ABC.txt", "ABC123", but not "xABC". This is glob pattern matching which is anchored at both ends. If files were created today you must run sudo updatedb first.In comparison the find command starting at / root directory will a very long time and generate many permission errors.The above command takes 1 second to run on 1 million files. ![]() mnt/old/home/rick/.cache/mozilla/firefox/fault/cache2/entries/ABC0C99FCEABAD0C6AA2078CD025A1CDE48D7BA1 mnt/clone/usr/src/linux-headers-5.0.1-050001/tools/lib/lockdep/tests/ABCDBDDA.sh mnt/clone/usr/src/linux-headers-5.0.1-050001/tools/lib/lockdep/tests/ABCDBCDA.sh If you don't know the directory the ABC* files are located in, and you have millions of files, the locate command is the fastest method. (Yeah, matching any character would be harmless in our case, but I did it for completeness' sake.) In case you want to use it as a literal dot, you'll have to "escape" it using a backslash \ before it. in regex has a special meaning too: it means "match any single character here". ^ in regex matches the beginning of the string this prevents it from matching the pattern if it doesn't occur in the beginning of the file name. Regex is an extremely powerful searching tool if you master it, and there are sites such as this which teach you about it in more depth, but note that grep is not a full-fledged regex engine and you can't do everything with it. Now the pattern itself is written in a particular syntax called regular expression, or regex for short.
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