How to obtain software package information in Linux system?

Querying information about software packages in Linux systems is a common task for system administrators and developers. In Linux systems, you can use different commands to query software package information, such as software package version, description, installation path, etc. This article will introduce several commonly used methods to query software package information and provide specific code examples.

1. Use the dpkg command to query software package information

dpkg is a tool used to manage software packages in the Debian Linux system. You can use the dpkg command to query software package information. The following are several commonly used dpkg command examples:

1. Query information about installed software packages:

   dpkg -l package_name

   Example:

   dpkg -l apache2

2. Query the detailed information of the software package:

   dpkg -s package_name

   Example:

   dpkg -s apache2

3. Query the file path of the software package:

   dpkg -l package_name

   Example:

   dpkg -l apache2

2. Use the apt command to query software package information

apt is an advanced tool used to manage software packages in Debian series Linux systems. You can query software package information through the apt command. . The following are several commonly used apt command examples:

1. Query the version information of the software package:

   apt show package_name

   Example:

   apt show apache2

2. List all installed packages:

   apt list --installed

3. List available package candidates:

   apt search search_query

   Example:

   apt search nginx

3. Use the rpm command to query software package information

rpm is a tool used to manage software packages in Red Hat series Linux systems. You can query software package information through the rpm command. The following are several commonly used rpm command examples:

1. Query information about installed software packages:

   rpm -qi package_name

   Example:

   rpm -qi httpd

2. Query the file path of the software package:

   rpm -ql package_name

   Example:

   rpm -ql httpd

The above are several common methods and specific code examples for querying software package information in Linux systems . Through these commands, users can easily obtain information about the required software packages to better manage the system and development work.

The above is the detailed content of How to obtain software package information in Linux system?. For more information, please follow other related articles on the PHP Chinese website!