The EOF marker (End Of File) is a delimiter used in shell scripting to indicate the end of a here document. It allows you to provide multi-line input directly in your script or command line.
Key Points:
- Purpose: It signifies where the input for the command begins and ends.
- Customizable: You can use any word instead of
EOF, but it must match at both the start and end. - No Special Meaning: The term
EOFitself doesn't have a special meaning in the shell; it's just a convention.
Example:
In the following command:
cat << 'EOF'
This is some text.
EOFThe text "This is some text." will be passed to the cat command, and the input ends when the second EOF is encountered.
Feel free to ask if you need more clarification!
