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Appendix A. Appendix—Commands and Variables

This appendix is a listing of the commands, flags, and variables built into Expect (not including those provided by Tcl). The listing does not show the complete syntax for each command or flag; this is just an aid to jog your memory as to what is available. Alongside each entry is a brief description and a page number. The page number points to where the command is best described, not necessarily where it first or literally appears.

I have omitted information that is redundant (such as the timestamp substitutions which can all be found on the page which describes timestamp) and the debugger commands (which can be produced by pressing h while in the debugger). I have also omitted commands specific to C and C++ programming since that information is well confined to two short chapters. You can also find all of this in the index.

All of the commands shown here that do not start with "exp" are also callable with the "exp_" prefix. For instance, close can also be called as exp_close.

Commands And Flags

`close`	close spawned process	Page 101
`−i`	identify process	245
`-slave`	close slave of process	291
`debug`	control debugger	406
`-now`	start debugger immediately	407
`0` or `1`	stop or start debugger	406
`disconnect`	disconnect process from tty	371
`exit`	exit	35
`-onexit`	declare exit handler	317
`-noexit`	invoke exit handlers but do not exit	317
`#`	exit with this value	35
`exp_continue`	continue `expect` command	142
`-continue_timer`	do not restart internal timer	144
`exp_internal`	control internal diagnostics	162
`-info`	return state	178
`-f`	direct diagnostics to file	169
`0` or `1`	stop or start diagnostics	167
`exp_open`	open spawned process as file identifier	300
`−i`	identify process	300
`-leaveopen`	leave spawned process accessible	301
`exp_pid`	return process id	300
`−i`	identify process	300
`exp_version`	return version of Expect	522
`-exit`	exit if version mismatch	522
`version`	version needed by script	522
`expect`	wait for pattern	72
`timeout`	match timeout	94
`eof`	match eof	98
`full_buffer`	match full buffer	149
`default`	match timeout or eof	101
`null`	match null	153
`-brace`	arguments are braced	158
`-gl`	glob pattern	109
`-re`	regular expression	109
`-ex`	exact string	132
`-notransfer`	do not update internal buffer	151
`-nocase`	treat input as all lowercase	137
`−i`	identify process	243
`-indices`	save indices of match	123
`pattern action ...`	pattern action pairs	75
`expect_after`	wait for pattern before others	255
	same flags as for `expect`, plus
`-all`	return patterns of all spawn ids	262
`-info`	return patterns	262
`-noindirect`	do not return patterns of indirects	265
`expect_background`	wait for pattern in background	441
	same flags as for `expect_after`
`expect_before`	wait for pattern after others	255
	same flags as for `expect_after`
`expect_tty`	wait for pattern from terminal	205
	same flags as for `expect`
`expect_user`	wait for pattern from user	188
	same flags as for `expect`
`fork`	create child process	370
`inter_return`	return from caller	226
`interact`	pass control of process to user	82
`eof`	match eof	337
`timeout`	match timeout	338
`null`	match null	338
`-brace`	arguments are braced	320
`-re`	regular expression	324
`-ex`	exact string	323
`-input`	input processes	349
`-output`	output processes	349
`-u`	substitute for user process	346
`-o`	process patterns	323
`−i`	identify process	345
`-echo`	echo	329
`-nobuffer`	do not buffer partial matches	333
`-indices`	save indices of match	324
`-reset`	reset terminal mode	340
`-iwrite`	save process spawn id	355
`pattern action ...`	pattern action pairs	320
`interpreter`	pass control of Expect to user	221
`log_file`	control output saving to file	176
`-a`	save all output	177
`-noappend`	save to beginning of file	176
`-info`	return state	178
`-leaveopen`	treat file as log	176
`-open`	treat file as log	176
`file`	save output to file	176
`log_user`	control output to screen	171
`-info`	return state	178
`0` or `1`	stop or start output	171
`match_max`	control match buffer size	148
`-d`	default (future processes)	148
`−i`	identify process	245
`#`	new buffer size	148
`parity`	control parity	154
`-d`	default (future processes)	154
`−i`	identify process	245
`0` or `1`	strip or preserve parity	154
`prompt1`	prompt after complete command	224
`prompt2`	prompt after incomplete command	224
`remove_nulls`	control nulls	153
`-d`	default (future processes)	153
`−i`	identify process	245
`0` or `1`	preserve or strip nulls	153
`send`	send string	71
`—`	treat next string as literal	278
`−i`	identify process	243
`-h`	send humanly	273
`-s`	send slowly	271
`-null`	send null	277
`-raw`	do not insert returns	194
`-break`	send break	277
`string`	string to be sent	71
`send_error`	send to standard error	183
	same flags as `send`
`send_log`	send to log	178
`—`	treat next string as literal	278
`string`	string to be sent	178
`send_tty`	sent to `/dev/tty`	206
	same flags as `send`
`send_user`	send to standard output	181
	same flags as `send`
`sleep` `#`	sleep number of seconds	192
`spawn`	start a process	78
`-console`	treat process as console	296
`-ignore`	ignore signal	306
`-leaveopen`	treat file as spawned process	285
`-open`	treat file as spawned process	285
`-noecho`	do not echo spawn command	294
`-nottycopy`	do not initialize pty like `/dev/tty`	296
`-nottyinit`	do not do sane initialization	296
`-pty`	allocate pty without starting process	289
`strace`	trace statements	401
`-info`	return state	401
`#`	depth to which to trace	401
`stty`	modify terminal parameters	193
`<``ttyname`	terminal to modify	200
`raw`	raw mode	194
`-raw`	cooked mode	195
`cooked`	cooked mode	201
`-cooked`	raw mode	201
`echo`	echo	195
`-echo`	no echo	195
`rows` `[#]`	set or return rows	201
`columns` `[#]`	set or return columns	201
`local-stty-args`	execute native `stty` command	201
`system` `local-cmd`	execute Bourne shell command	203
`timestamp`	return timestamp	522
`-format`	timestamp format	522
`-seconds`	time source	522
`trap`	define signal handler	303
`-code`	code to return	316
`-interp`	interpreter to use	316
`-name`	return name of current signal	305
`-number`	return number of current signal	305
`-max`	return number of signals	314
`action signal-list`	action to execute upon signals	305
`wait`	wait for process to go away	105
`−i`	identify process	245
`-nowait`	wait for process in future	106

Variables

`any_spawn_id`	any listed spawned process	254
`argc`	number of initial arguments	210
`argv`	initial arguments	210
`argv0`	name of script	210
`dbg`	debugger breakpoint regexp results	418
`error_spawn_id`	spawn id of standard error	241
`exp_library`	platform-independent utility scripts	520
`exp_exec_library`	platform-dependent utility scripts	520
`expect_out`	results of `expect`	111
`interact_out`	results of `interact`	324
`send_human`	controls for `send -h`	273
`send_slow`	controls for `send -s`	271
`spawn_out`	results of `spawn`	290
`spawn_id`	currently spawned process	229
`stty_init`	`stty` parameters for `spawn`	296
`timeout`	maximum time for `expect` to wait	75
`tty_spawn_id`	spawn id of `/dev/tty`	241
`user_spawn_id`	spawn id of standard input and output	241

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Table of Contents for A. Appendix—Commands and Variables

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Appendix A. Appendix—Commands and Variables

Commands And Flags

Variables

Table of Contents for
A. Appendix—Commands and Variables