Home Common Problem How to find files in Linux

How to find files in Linux

Jul 31, 2023 pm 01:19 PM
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How to find files in Linux: 1. Use the find command; 2. Use the locate command; 3. Use the grep command; use the whereis command.

How to find files in Linux

#In the Linux operating system, we often need to find specific files or directories. Whether it is used to locate lost files or to find specific types of files, Linux provides some powerful tools and commands to help us search and find files. This article will introduce readers to several commonly used Linux file search commands and tools.

1. Use the find command:

The find command is one of the most commonly used file search tools in Linux. It has a very flexible search function that can search based on file name, file type, file size, file permissions, etc.

The basic find command syntax is as follows:

find [path] [options] [expression]

Among them, path specifies the path to start the search, and options is used to specify some Search options, expression represents specific search conditions.

Here are some examples of common find commands:

- Find a file with a specified filename:

find / -name filename

This will start from The root directory starts looking for a file named filename and returns all matching results.

- Find files of the specified file type:

find / -type f -name "*.txt"

This will find all txt files starting from the root directory.

- Find files larger than the specified size in the specified directory:

find /path/to/directory -type f -size 10M

This will search in the specified directory All files larger than 10M.

2. Use the locate command:

The locate command is another commonly used file search command. Unlike the find command, the locate command maintains a database of all files and directories, so its searches are faster.

First, you need to use the updatedb command to update the database of the locate command. Then, you can use the locate command to find the file.

The following is an example of using the locate command:

locate filename

This will find a file named filename in the database and return all matching results.

3. Use the grep command:

The grep command is a powerful text search tool that can also be used to find specific strings or patterns in files. It can check the file contents and return matching lines.

The following is an example of using the grep command:

grep "pattern" file

This will find lines containing the specified pattern in file and return all matching results .

4. Use whereis command:

whereis command is used to find the location of binary, source code and help documentation files.

The following is an example of using the whereis command:

whereis command

This will return the location of the binary, source code, and help documentation files associated with the specified command.

Summary:

Linux provides a variety of powerful tools and commands to help us find files. Different commands are suitable for different file search needs. The find command can search based on a variety of conditions, the locate command provides faster search results by searching the database, the grep command is used to find strings or patterns in files, and the whereis command is used to find binary and help file locations. Proficient in these commands will allow us to search for files more efficiently in Linux systems .

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