How to append to a file?

To append to a file in Bash, you can use the >> operator. This operator allows you to add new content to the end of an existing file without deleting its current contents. Here’s how you can do it:

Example

1. Using the echo command:

   echo "New content to append" >> filename.txt
   

2. Using a Bash script: You can create a Bash script to append content. Here’s an example script:

   #!/bin/bash
   # Display existing content
   echo "Before appending the file"
   cat filename.txt
   
   # Append new content
   echo "Learning Laravel 5" >> filename.txt
   
   # Display updated content
   echo "After appending the file"
   cat filename.txt
   

3. Run the script: Save the script as append_file.sh and run it:

   bash append_file.sh
   

This will show the existing content of the file, append the new content, and then display the updated content.