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How to Find a File in Linux Using the Command Line.
The 'find' command offers powerful options to hone your search.
Despite the popularity of window managers that offer graphical user interfaces, the best way to search for files in Linux still requires a shell. The find command, with its myriad options and switches, offers the most powerful and precise features to surface what you're looking for.
All modern Linux distributions support find from the shell. Access the shell (sometimes called the terminal window ) by clicking the relevant icon or pressing Ctrl+Alt+T .
The 'find' Command.
The command used to search for files is called find.
The basic syntax of the find command is:
The currently active path marks the search location, by default. To start searching the whole drive you would type the following:
If, however, you want to start searching for the folder you are currently in then you can use the following syntax:
When you search by name across the whole drive, use the following syntax:
The first part of the find command is the find command itself. The second part is where to start searching from. The next part is an expression which determines what to find. Finally the last part is the name of the thing to find.
Search Location Shortcuts.
The first argument after find is the location you wish to search. Although you may specify a specific directory, most people use a metacharacter to serve as a substitute. The three metacharacters that work with this command include:
Period : specifies the current and all nested folders Forward Slash : specifies the entire filesystem Tilde : specifies the active user's home directory.
Searching the entire filesystem is likely to generate a lot of access-denied errors. Run the command with elevated privileges (e.g., by using sudo ), if you need to search in places your standard account normally cannot access.
Expressions.
The most common expression you will use is -name . The -name expression lets you search for the name of a file or folder.
There are, however, other expressions you can use:
-amin n : The file was last accessed n minutes ago -anewer: The file was last accessed more recently than it was modified -atime n: The file was last accessed more n days ago -cmin n: The file was last changed n minutes ago - cnewer: The file was last changed more recently than the file was modified -ctime n: The file was last changed more than n days ago -empty: The file is empty - executable: The file is executable -false: Always false -fstype type: The file is on the specified file system -g > -mtime n: File's data was last modified n days ago -name name: Search for a file with the specified name -newer name: Search for a file edited more recently than the file given -nogroup: Search for a file with no group id -nouser: Search for a file with no user attached to it -path path: Search for a path - readable: Find files which are readable -regex pattern: Search for files matching a regular expression -type type: Search for a particular type -uid uid: Files numeric user id is the same as uid -user name: File is owned by user specified -writable: Search for files that can be written to.
Example Usage of the Find Command.
How to Find Files Accessed More Than a Certain Number of Days Ago.
To find all the files within your home folder accessed more than 100 days ago:
How to Find Empty Files and Folders.
To find all the empty files and folders in your system:
How to Find All of the Executable Files.
To find all of the executable files on your computer:
How to Find All of the Readable Files.
To find all of the files that are readable:
Patterns.
When you search for a file you can use a pattern. For example, search for all files with the extension mp3:
How to Send Output from the Find Command to a File.
The main problem with the find command is that it can sometimes return too many results to look at in one go. Pipe the output to the tail command or you can output the lines to a file as follows:
How to Find and Execute a Command Against a File.
To search for and edit a file at the same time:
The above command searches for a file called filename and then runs the nano editor for the file that it finds.

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