The “info” command is a Unix utility used to read documentation stored in the Info format. Info is a hypertext documentation system used primarily on Unix-like operating systems. It provides a way to organize and navigate large amounts of documentation efficiently, allowing users to access detailed information about various commands, programs, and concepts.
Here’s a more detailed explanation of the “info” command and the Info format:
- Info Format: Info documents are typically written in plain text and organized into nodes. Each node represents a specific topic or section of documentation. Nodes can contain text, hyperlinks to other nodes, and cross-references to related topics.
- Navigation: The “info” command allows users to navigate through Info documents using a simple text-based interface. Users can move between nodes, follow hyperlinks, and search for specific keywords or topics within the documentation.
- Structured Documentation: Info documents are often structured hierarchically, with larger topics divided into smaller sections or subtopics. This makes it easy for users to find relevant information and navigate through complex documentation.
- Integration with Unix System: The “info” command is typically included as part of the standard set of Unix utilities. It is commonly used to access documentation for system commands, programming languages, and other Unix-related topics.
- Extensibility: Info documents can be easily extended and customized to include additional information or documentation for specific software packages or projects. This flexibility allows developers and system administrators to create comprehensive documentation tailored to their needs.
- Accessibility: The “info” command provides a straightforward and accessible way to access documentation from the command line. This can be particularly useful for users working in text-based environments or on remote systems without graphical interfaces.
info Command Examples
1. Start reading top-level directory menu:
# info
2. Start reading at given menu item node from top-level directory:
# info [menu_item]
3. Start reading at second menu item within first menu item manual:
# info [first_menu_item] [second_menu_item]
Summary
Overall, the “info” command is a valuable tool for accessing documentation in the Info format on Unix-like operating systems. Whether exploring system commands, learning about programming languages, or researching technical concepts, users can rely on the “info” command to access detailed and organized documentation quickly and efficiently.