Tcl >> Tcl Built-In Commands

Tcl >> Tcl Built-In Commands


Tcl Built-In Commands
String Handling
append - Append to variable
binary - Insert and extract fields from binary strings
encoding - Manipulate encodings
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
refchan - Command handler API of reflected channels, version 1
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
http - Client-side implementation of the HTTP/1.1 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

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Copyright © 1990-1994 The Regents of the University of California
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Copyright © 1992-1999 Karl Lehenbauer and Mark Diekhans.
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