TCL Scripting Training

Curriculum:

Introduction:

• The TCLSH
• Overview of TCL & Tk
• Getting Started With TCLSH TCL language Syntax
• Scripts, Commands and Words
• Evaluating a Command
• Variable Substitution
• Command Substitution
• Backslash Substitution
• Quoting with Double-Quotes
• Quoting with Braces
• Comments
• Normal and Exceptional Returns
• More on Substitutions Variables
• Simple Variables and the set Commands
• Arrays
• Variable Substitution
• Removing Variable: Unset
• Multi-Dimensional Arrays
• The INCR and Append Commands
• Preview of other Variable Facility
• Numeric Operands
• Operators and Precedence
• Math Functions
• Substitutions
• String Manipulation
• Types and Conversions
• Precision lists
• Basic list structure and the Lindex Commands
• Creating Lists: Concat, List, and length
• Modifying ListsLINSERT, REPLACE, RANGE, AND APPEND
• Searching Lists: LSearch
• Sorting Lists: LSORT
• Converting Between Strings and Lists: SPLIT AND JOIN
• Lists and Commands

Control Flow:

• The IF Command
• Looping Commands: WHILE, FOR, AND FOREACH
• Loop Control: BREAK AND CONTINUE
• The Switch Command
• Eval
• Executing From Files: Source 68 Procedures
• Procedures Basics: Proc and return
• Local and Global Variables
• Defaults and Variables numbers of arguments
• Call by Reference: Upvar
• Creating new Control Structures: uplevel Searching of a Pattern Exception Errors
• The SH Process
• What happens after an error
• Generating Errors From TCL SCRIPTS
• Trapping Errors with catch
• Exceptions in general String Manipulation
• Two-Way Communication Commands
• Glob-Style Pattern Matching
• Pattern Matching with Regular
• Using regular Expressions for substitution
• Generating Strings with Format
• Parsing Strings with Scan
• Extracting Characters: Strings index and string length
• Searching and Comparison
• Length, case Conversion, and Trimming accessible files
• System variables
• The Script Executed during Login time
• File names
• Basic File I/O
• Output Buffering
• Random Access to Files
• The current Working Directory
• Manipulating File names: Glob and Files
• File Information Commands
• Errors in System Calls Processes
• Invoking Subprocesses with EXEC

I/O To And From A Command Pipeline:

• Processes
• Environment Variables
• Terminating the Tcl Process with Exitshell variables managing TCL
• Querying the elements of an array
• The info command
• Information about variables
• Information about Procedures
• Information about Commands
• TCLversion and Library
• Timing Command Execution
• Tracing Operations on Variables
• Renaming and deleting commands
• Unknown Commands
• Auto-Loading