How to use a here documents to write data to a file in bash script

How do I use a heredoc redirection feature (here documents) to write data to a file in my bash shell scripts?
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How to run shell script in Linux

I am a new Linux system user. How do I run shell script in Linux? How do you execute .sh file in Linux?
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Bash Script: Find Out In What Directory Script Is Stored Under Unix Or Linux

How can I find out the path of the directory in which my bash shell script is located and store that path in _base variable?
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Linux / UNIX: Bash Script Sleep or Delay a Specified Amount of Time

How do I pause for 5 seconds or 2 minutes in my bash shell script on a Linux or Unix-like systems?
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Bash Infinite Loop Examples

How do I write an infinite loop in Bash script under Linux or UNIX like operating systems?
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HowTo: Bash For While Loop Through File Contents Script

How can I iterate through each line of a text file with Bash for or while loop under Linux or Unix like operating systems?
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Bash Script: Read One Character At A Time

I need to count one character at a time from input.txt. How do I read one character at a time under Linux / UNIX bash shell script?
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bash script