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tee - Split Output

Learn to use tee to send output to both the screen and a file simultaneously.

Step 1

Use tee to write "hello" to output.txt while also displaying it on screen.

Type: echo hello | tee output.txt

echo hello | tee output.txt

Step 2

Verify the file was created by reading output.txt with cat.

Step 3

Append "world" to output.txt using tee -a (append mode).

Step 4

Check output.txt to verify both lines are there.