All manuals Tcl

Tcl Built-In Commands

150 commands

A

after Execute a command after a time delay cancel idle info
append Append to variable
apply Apply an anonymous function
argc Variables used by Tcl
argv Variables used by Tcl
argv0 Variables used by Tcl
array Manipulate array variables anymore default default exists default get default set default unset donesearch exists for get names nextelement set size startsearch statistics unset
auto_execok Standard library of Tcl procedures
auto_import Standard library of Tcl procedures
auto_load Standard library of Tcl procedures
auto_mkindex Standard library of Tcl procedures
auto_path Variables used by Tcl
auto_qualify Standard library of Tcl procedures
auto_reset Standard library of Tcl procedures

B

bgerror Command invoked to process background errors
binary Insert and extract fields from binary strings
break Abort looping command
buildinfo Build info clang commit compiledebug compiler compilestats cplusplus debug gcc icc ilp32 memdebug msvc nmake no-deprecate no-thread no-optimize objective-c objective-cplusplus patchlevel profile purify static tommath version zlib

C

catch Evaluate script and trap exceptional returns
cd Change working directory
chan Read, write and manipulate channels blocked close configure copy create eof event flush gets isbinary names pending pipe pop postevent push puts read seek tell truncate
clock Obtain and manipulate dates and times add clicks format microseconds milliseconds scan seconds
close Close an open channel
concat Join lists together
const Create and initialize a constant
continue Skip to the next iteration of a loop
coroinject Create and produce values from coroutines
coroprobe Create and produce values from coroutines
coroutine Create and produce values from coroutines

D

dict Manipulate dictionaries append create exists filter for get getdef getwithdefault incr info keys lappend map merge remove replace set size unset update values with

E

encoding Manipulate encodings convertfrom convertto dirs names profiles system user
env Variables used by Tcl
eof Check for end of file condition on channel
error Generate an error
errorCode Variables used by Tcl
errorInfo Variables used by Tcl
eval Evaluate a Tcl script
exec Invoke subprocesses
exit End the application
expr Evaluate an expression

F

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 atime attributes channels copy delete dirname executable exists extension home isdirectory isfile join link lstat mkdir mtime nativename normalize owned pathtype readable readlink rename rootname separator size split stat system tail tempdir tempfile tildeexpand type volumes writable
fileevent Execute a script when a channel becomes readable or writable
filename File name conventions supported by Tcl commands
flush Flush buffered output for a channel
for 'For' loop
foreach Iterate over all elements in one or more lists
foreachLine Standard library of Tcl procedures
format Format a string in the style of sprintf

G

gets Read a line from a channel
glob Return names of files that match patterns
global Access global variables

H

history Manipulate the history list add change clear event info keep nextid redo

I

if Execute scripts conditionally
incr Increment the value of a variable
info Information about the state of the Tcl interpreter args body class cmdcount cmdtype commands complete constant consts coroutine default errorstack exists frame functions globals hostname level library loaded locals nameofexecutable object patchlevel procs script sharedlibextension tclversion vars class call class constructor class definition class definitionnamespace class destructor class filters class forward class instances class methods class methodtype class mixins class properties class subclasses class superclasses class variables object call object class object creationid object definition object filters object forward object isa object isa class object isa metaclass object isa mixin object isa object object isa typeof object methods object methodtype object mixins object namespace object properties object variables object vars
interp Create and manipulate Tcl interpreters alias aliases bgerror cancel children create debug delete eval exists expose hide hidden invokehidden issafe limit marktrusted recursionlimit share target transfer

J

join Create a string by joining together list elements

L

lappend Append list elements onto a variable
lassign Assign list elements to variables
ledit Replace elements of a list stored in variable
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
lmap Iterate over all elements in one or more lists and collect results
load Load machine code and initialize new commands
lpop Get and remove an element in a list
lrange Return one or more adjacent elements from a list
lremove Remove elements from a list by index
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
lseq Build a numeric sequence returned as a list
lset Change an element in a list
lsort Sort the elements of a list

M

memory Control Tcl memory debugging capabilities active break_on_malloc info init objs onexit tag trace trace_on_at_malloc validate

N

namespace Create and manipulate contexts for commands and variables children code current delete ensemble eval exists export forget import inscope origin parent path qualifiers tail upvar unknown which ensemble create ensemble configure ensemble exists

O

open Open a file-based or command pipeline channel

P

package Facilities for package loading and version control files forget ifneeded names present provide require require -exact unknown vcompare versions vsatisfies prefer
parray Standard library of Tcl procedures
pid Retrieve process identifiers
pkg::create Construct an appropriate 'package ifneeded' command for a given package specification
pkg_mkIndex Build an index for automatic loading of packages
proc Create a Tcl procedure
puts Write to a channel
pwd Return the absolute path of the current working directory

R

re_syntax Syntax of Tcl regular expressions
read Read from a channel
readFile Standard library of Tcl procedures
refchan Command handler API for channels implemented in Tcl code
regexp Match a regular expression against a string
regsub Perform substitutions based on regular expression pattern matching
rename Rename or delete a command
return Return from a procedure, or set return code of a script

S

safe Creating and manipulating safe interpreters
scan Parse string using conversion specifiers in the style of sscanf
seek Change the access position for an open channel
set Read and write variables
socket Open a TCP network connection
source Evaluate a file or resource as a Tcl script
split Split a string into a proper Tcl list
string Manipulate strings cat compare equal first index insert is last length map match range repeat replace reverse tolower totitle toupper trim trimleft trimright wordend wordstart
subst Perform backslash, command, and variable substitutions
switch Evaluate one of several scripts, depending on a given value

T

tailcall Replace the current procedure with another command
Tcl Tool Command Language
tcl::prefix Facilities for prefix matching all longest match
tcl::process Subprocess management autopurge list purge status
tcl_endOfWord Standard library of Tcl procedures
tcl_findLibrary Standard library of Tcl procedures
tcl_interactive Variables used by Tcl
tcl_library Variables used by Tcl
tcl_nonwordchars Standard library of Tcl procedures
tcl_patchLevel Variables used by Tcl
tcl_pkgPath Variables used by Tcl
tcl_platform Variables used by Tcl
tcl_rcFileName Variables used by Tcl
tcl_startOfNextWord Standard library of Tcl procedures
tcl_startOfPreviousWord Standard library of Tcl procedures
tcl_traceCompile Variables used by Tcl
tcl_traceExec Variables used by Tcl
tcl_version Variables used by Tcl
tcl_wordBreakAfter Standard library of Tcl procedures
tcl_wordBreakBefore Standard library of Tcl procedures
tcl_wordchars Standard library of Tcl procedures
tell Return current access position for an open channel
throw Generate a machine-readable error
time Time the execution of a script
timerate Calibrated performance measurements of script execution time
tm Facilities for locating and loading of Tcl Modules ::tcl::tm::path add ::tcl::tm::path remove ::tcl::tm::path list file normalize [info library]/../tcl file normalize EXEC/tcl
trace Monitor variable accesses, command usages and command executions add add command add execution add variable remove remove command remove execution remove variable info info command info execution info variable
transchan Command handler API for channel transforms implemented in Tcl code
try Trap and process errors and exceptions

U

unknown Handle attempts to use non-existent commands
unload Unload machine code
unset Delete variables
update Process pending events and idle callbacks
uplevel Execute a script in a different stack frame
upvar Create link to variable in a different stack frame

V

variable Create and initialize a namespace variable
vwait Process events until a variable is written

W

while Execute script repeatedly as long as a condition is met
writeFile Standard library of Tcl procedures

Y

yield Create and produce values from coroutines
yieldto Create and produce values from coroutines

Z

zlib Compression and decompression operations compress decompress deflate gunzip gzip inflate push stream stream compress stream decompress stream deflate stream gunzip stream gzip stream inflate adler32 crc32

Tcl Built-In Commands

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