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Table of Contents
1. Overview
2. Basic usage of ldconfig command
3. Common options of ldconfig command
4. Sample code
1. View shared library cache content
2. Use the verbose option to view detailed information
3. Force the creation of a shared library cache
5. How the ldconfig command works
6. Notes
7. Summary
Home Operation and Maintenance Linux Operation and Maintenance Detailed explanation of Linux ldconfig command

Detailed explanation of Linux ldconfig command

Mar 14, 2024 pm 12:18 PM
linux Order ldconfig

Linux ldconfig命令詳解

Linux ldconfig command detailed explanation

1. Overview

In Linux systems, ldconfig is a command used to configure shared libraries. It is used to update the links and cache of shared libraries and enable the system to load dynamically linked shared libraries correctly. The main function of ldconfig is to find dynamic link libraries and create symbolic links for program use. This article will delve into the usage and working principle of the ldconfig command, and use specific code examples to help readers better understand the functions of ldconfig.

2. Basic usage of ldconfig command

The basic syntax of ldconfig command is as follows:

ldconfig [OPTION]...

3. Common options of ldconfig command

  1. -n, --print-cache: Print the current shared library cache content.
  2. -v, --verbose: Display detailed output information.
  3. -p, --format: Specify the output format of ldconfig.

4. Sample code

1. View shared library cache content

ldconfig -n

2. Use the verbose option to view detailed information

ldconfig -v

3. Force the creation of a shared library cache

ldconfig -v -n /path/to/library

5. How the ldconfig command works

The workflow of the ldconfig command is as follows:

  1. ldconfig reads /etc/ld.so .conf and configuration files in the /etc/ld.so.conf.d directory to obtain the search path for shared libraries.
  2. ldconfig scans shared library files under these paths and creates symbolic links.
  3. ldconfig updates the shared library cache so that the system can correctly load dynamically linked shared libraries.

6. Notes

  1. After updating the shared library, you should use the ldconfig command to refresh the cache to make the system effective.
  2. Use the ldconfig command with caution to avoid system errors.

7. Summary

Through the introduction of this article, readers should have a deeper understanding of the ldconfig command. ldconfig plays an important role in Linux systems and can help users correctly load dynamically linked shared libraries. Through the code examples provided in this article, readers can better learn and use the ldconfig command and improve the efficiency and accuracy of system management.

Hope this article is helpful to you, thank you for reading!

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