Linux Terminal Command: whereis

The whereis command is an essential tool in Foundations & Navigation. In this tutorial, we will explore what whereis does, look at everyday examples, and cover advanced options to supercharge your command-line workflow.

Concept & Explanation

The whereis command searches a list of standard system directories for the binary executables, source files, and man pages associated with a specified program.

Common Options & Syntax

whereis [options] [arguments]

Here are the most common flags used with whereis:

• Simple Usage: Basic default commands.
• Detailed View: Shows diagnostic information.
• Advanced Actions: Can chain parameters for scripting.

1. Interactive Example (Simple)

Here is how most people run the command:

# Example
whereis bash

What it does: Prints the binary path, source path, and man page locations for ‘bash’.

2. Power-User Example (Advanced)

For scripting and advanced diagnostics, use this configuration:

# Advanced
whereis -b -m ls

What it does: Limits the search to only show binaries (-b) and manual pages (-m) for the ls command.

⚙️ Warning & Common Pitfalls

[!WARNING] whereis hardcodes standard system search paths (like /usr/bin, /usr/share/man). It will not find binaries placed in custom user directories.

🔗 Related Commands

Here are some related posts on cli_tty1 you might want to check out:

• find : Search for files in a directory hierarchy.