•Arnošt Havelka
Practical: Echo Files
Real-world scenario: Creating logs and config files.
Start Interactive Lesson
Practical: Echo & Redirection
The echo command isn't just for printing text to the screen. Combined with redirection operators (> and >>), it becomes a powerful tool for creating files, writing logs, and generating configuration files on the fly.
The Mission
You are automated a backup script. You need to creating a log file, adding a timestamp entry to it, and creating a simple configuration file.
Step 1: Create a New Log File
We use > to write output to a file. Warning: This overwrites the file if it exists!
Command Prompt
C:\Users\User>echo Backup Started > backup.log
Step 2: Append to the Log
We use >> to add lines to the end of the file without erasing previous content.
Command Prompt
C:\Users\User>echo Status: Success >> backup.log
Step 3: Check the Content
Use type to read the file content.
Command Prompt
C:\Users\User>type backup.log
Step 4: Create a Config File
Creating a multiline file using multiple echo commands.
Command Prompt
C:\Users\User>(echo debug=true && echo port=8080) > config.ini
Knowledge Check
1 / 3Which operator OVERWRITES the file?