[English] Debian Almquist Shell (dash) basename usage: Extract the filename from a path

Overview

The basename command in the Debian Almquist Shell (dash) is used to strip the directory and suffix from file names. It is particularly useful when you want to obtain just the file name from a full path or remove a specific suffix from a file name.

Usage

The basic syntax of the basename command is as follows:

basename [options] [arguments]

Common Options

• -a: Treat each argument as a separate file name and return the base name for each.
• -s: Remove a specified suffix from the file name.
• --help: Display help information about the command.

Common Examples

1. Extracting the file name from a path:

   basename /usr/local/bin/script.sh
   

   Output:

   script.sh
   

2. Removing a suffix from a file name:

   basename report.txt .txt
   

   Output:

   report
   

3. Handling multiple file names:

   basename -a /path/to/file1.txt /path/to/file2.log
   

   Output:

   file1.txt
   file2.log
   

4. Using with a suffix:

   basename -s .log /path/to/file2.log
   

   Output:

   file2
   

Tips

• Use basename in scripts to dynamically extract file names from paths, which can be useful for logging or processing files.
• Combine basename with other commands like find to manipulate file names effectively.
• Remember that basename only returns the last component of a path; if you need to work with directories, consider using the dirname command.