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Including text in a shell script

Text can be included in the shell script by using a here document, a special form of input redirection.

The << symbol is used to indicate that text should be read up to a given mark. For example:

   #!/bin/sh
   # this script outputs the given text before it runs
   cat << EOF
   This shellscript is currently under development, please
   report any problems to Danny ([email protected])
   EOF
   exec /usr/local/test/bin/test_version

The text is read from the script until a pattern is found which matches that after the << symbol; execution then proceeds as normal.

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