look

look *fh, key, dict, fold

• Performs string search and sets the position in filehandle fh to the first line with a key equal to or greater than key. Returns the new file position, or -1 in case of error. Takes the following arguments:
  • fh
  • Filehandle of the dictionary file.
  • key
  • Key to search for.
  • dict
  • If true, searches in dictionary order, considering only word characters and whitespace.
  • fold
  • If true, ignore case.