- Tcl Built-In Commands
-
- String Handling
-
- append - Append to variable
- binary - Insert and extract fields from
binary strings
- format - Format a string in the style of
sprintf
- re_syntax - Syntax of Tcl regular
expressions
- regexp - Match a regular expression against
a string
- regsub - Perform substitutions based on
regular expression pattern matching
- scan - Parse string using conversion
specifiers in the style of sscanf
- string - Manipulate strings
- subst - Perform backslash, command, and
variable substitutions
- List Handling
-
- concat - Join lists together
- join - Create a string by joining together
list elements
- lappend - Append list elements onto a
variable
- lassign - Assign list elements to variables
- lindex - Retrieve an element from a list
- linsert - Insert elements into a list
- list - Create a list
- llength - Count the number of elements in a
list
- lrange - Return one or more adjacent
elements from a list
- lrepeat - Build a list by repeating
elements
- lreplace - Replace elements in a list with
new elements
- lreverse - Reverse the order of a list
- lsearch - See if a list contains a
particular element
- lset - Change an element in a list
- lsort - Sort the elements of a list
- split - Split a string into a proper Tcl list
- Dictionary Handling
-
- dict - Manipulate dictionaries
- Math
-
- expr - Evaluate an expression
- mathfunc - Mathematical functions for Tcl
expressions
- mathop - Mathematical operators as Tcl
commands
- Control Constructs
-
- after - Execute a command after a time delay
- break - Abort looping command
- catch - Evaluate script and trap exceptional
returns
- continue - Skip to the next iteration of a
loop
- error - Generate an error
- eval - Evaluate a Tcl script
- for - 'For' loop
- foreach - Iterate over all elements in one
or more lists
- if - Execute scripts conditionally
- return - Return from a procedure, or set
return code of a script
- switch - Evaluate one of several scripts,
depending on a given value
- update - Process pending events and idle
callbacks
- uplevel - Execute a script in a different
stack frame
- vwait - Process events until a variable is
written
- while - Execute script repeatedly as long as
a condition is met
- Variables and Procedures
-
- apply - Apply an anonymous function
- array - Manipulate array variables
- global - Access global variables
- incr - Increment the value of a variable
- namespace - create and manipulate
contexts for commands and variables
- proc - Create a Tcl procedure
- rename - Rename or delete a command
- set - Read and write variables
- trace - Monitor variable accesses, command
usages and command executions
- unset - Delete variables
- upvar - Create link to variable in a
different stack frame
- variable - create and initialize a
namespace variable
- Input and Output
-
- chan - Read, write and manipulate channels
- close - Close an open channel
- eof - Check for end of file condition on
channel
- fblocked - Test whether the last input
operation exhausted all available input
- fconfigure - Set and get options on a
channel
- fcopy - Copy data from one channel to another
- file - Manipulate file names and attributes
- fileevent - Execute a script when a
channel becomes readable or writable
- flush - Flush buffered output for a channel
- gets - Read a line from a channel
- open - Open a file-based or command pipeline
channel
- puts - Write to a channel
- read - Read from a channel
- seek - Change the access position for an open
channel
- socket - Open a TCP network connection
- tell - Return current access position for an
open channel
- Packages and Source files
-
- load - Load machine code and initialize new
commands
- loadTk - Load Tk into a safe interpreter.
- package - Facilities for package loading
and version control
- pkg::create - Construct an appropriate
'package ifneeded' command for a given package specification
- pkg_mkIndex - Build an index for
automatic loading of packages
- source - Evaluate a file or resource as a
Tcl script
- tm - Facilities for locating and loading of Tcl
Modules
- unload - Unload machine code
- Interpreter Routines
-
- bgerror - Command invoked to process
background errors
- history - Manipulate the history list
- info - Return information about the state of
the Tcl interpreter
- interp - Create and manipulate Tcl
interpreters
- memory - Control Tcl memory debugging
capabilities
- unknown - Handle attempts to use
non-existent commands
- Library Procedures
-
- encoding - Manipulate encodings
- http - Client-side implementation of the
HTTP/1.0 protocol
- msgcat - Tcl message catalog
- platform - System identification support
code and utilities
- platform::shell - System
identification support code and utilities
- System Related
-
- cd - Change working directory
- clock - Obtain and manipulate dates and times
- exec - Invoke subprocesses
- exit - End the application
- glob - Return names of files that match
patterns
- pid - Retrieve process identifiers
- pwd - Return the absolute path of the current
working directory
- time - Time the execution of a script
- Platform-specific
-
- dde - Execute a Dynamic Data Exchange command
- registry - Manipulate the Windows registry
