A structured command history for UNIX using a parallel distributed processing model
This thesis investigates the use of a structured history to assist users in recalling previously entered complex UNIX commands. A structured history is a database of commands that were previously entered. Two models are presented: the first model uses a conventional database and the second model uses a parallel distributed processing system. The conventional database system can recall commands by pattern matching based on command name, pattern matching on command options, frequency of use, and relative time. A simple prototype, created using the Emacs environment, was useful in recalling previously entered UNIX commands. The parallel distributed processing system stores UNIX commands by decomposing them into two character sequences called bigrams. A prototype implementation used a two layer network, in which each unit represents a bigram. The implementation showed features such as spelling correction and associated command recall. The ability to recall a list of commands satisfying a particular criteria is among the advantages of a structured history. 19 refs., 8 figs., 1 tab.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6024701
- Report Number(s):
- UCRL-53919; ON: DE89012297
- Resource Relation:
- Other Information: Thesis (M.S.). Portions of this document are illegible in microfiche products. Thesis. Submitted to the Univ. of California, Davis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DATA BASE MANAGEMENT
PARALLEL PROCESSING
COMPUTER ARCHITECTURE
COMPUTER NETWORKS
DISTRIBUTED DATA PROCESSING
PROGRAMMING LANGUAGES
DATA PROCESSING
MANAGEMENT
PROCESSING
PROGRAMMING
990210* - Supercomputers- (1987-1989)
990300 - Information Handling