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Linux and Unix Shell Programming by David Tansley

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19.9. Checking the loaded functions

To make sure that the functions have been sourced, use the set command, which will display all the loaded functions available to the shell.

$ set 
USER=dave 
findit=() 
{
if [ $# -lt 1 ]; then 
  echo "usage :findit file"; 
  return 1; 
fi; 
find / -name $1 -print 
} 
...

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