Linux TCL Expect - Revision history

Pio2pio: /* Scripting */

2020-08-19T08:03:53Z

Scripting

← Older revision		Revision as of 10:03, 19 August 2020
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	;close: Closes the connection to the current process.		;close: Closes the connection to the current process.

	= Scripting =		= Scripting and [https://wiki.tcl-lang.org/page/Unix+shells TCL for Shell programmers] =
	<source lang=tcl>		<source lang=tcl>
	#!/usr/bin/expect		#!/usr/bin/expect

Pio2pio: /* References */

2020-08-19T08:03:08Z

References

← Older revision		Revision as of 10:03, 19 August 2020
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	= References =		= References =
			*[https://wiki.tcl-lang.org/page/Unix+shells TCL for Shell programmers]
	*[https://www.tcl.tk/man/expect5.31/expect.1.html TCL] Language manual		*[https://www.tcl.tk/man/expect5.31/expect.1.html TCL] Language manual
	*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars		*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars
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	*[https://stackoverflow.com/questions/3838591/fullpath-of-current-tcl-script/24177213#24177213 Fullpath of current TCL script] stackoverflow		*[https://stackoverflow.com/questions/3838591/fullpath-of-current-tcl-script/24177213#24177213 Fullpath of current TCL script] stackoverflow
	*[https://www.tcl.tk/man/tcl8.5/tutorial/Tcl25.html Information about Files - file, glob] TCL.tk		*[https://www.tcl.tk/man/tcl8.5/tutorial/Tcl25.html Information about Files - file, glob] TCL.tk

	*[[VPN Client]]		*[[VPN Client]]

Pio2pio: Pio2pio moved page Linux expect to Linux TCL Expect without leaving a redirect

2020-08-19T08:02:02Z

Pio2pio moved page Linux expect to Linux TCL Expect without leaving a redirect

← Older revision	Revision as of 10:02, 19 August 2020
(No difference)

Pio2pio: /* Most used commands and descriptions */

2020-07-28T18:19:27Z

Most used commands and descriptions

← Older revision		Revision as of 20:19, 28 July 2020
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	;send_user: Output that gets sent to stdout. This is used for sending message to the screen as the script runs. It is great for user feedback, banners, and for generating error messages.		;send_user: Output that gets sent to stdout. This is used for sending message to the screen as the script runs. It is great for user feedback, banners, and for generating error messages.

	;interact: This will give control of the current process over to the user for interaction. Great if the script can get a person to a certain point and then they have to take over. When you get to the point you want to interact with just put in the word "interact".		;[https://wiki.tcl-lang.org/page/interact interact]: This will give control of the current process over to the user for interaction. Great if the script can get a person to a certain point and then they have to take over. When you get to the point you want to interact with just put in the word "interact".

	;log_user :By default all process output shows up on stdout (your screen). To stop this you can set log_user to 0 <code>log_user 0</code> at the top of your script. To turn things back on just set it back to "log_user 1" or remove the line.		;log_user :By default all process output shows up on stdout (your screen). To stop this you can set log_user to 0 <code>log_user 0</code> at the top of your script. To turn things back on just set it back to "log_user 1" or remove the line.

Pio2pio: /* References */

2020-02-05T14:14:22Z

References

← Older revision		Revision as of 16:14, 5 February 2020
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	;close: Closes the connection to the current process.		;close: Closes the connection to the current process.

			= Scripting =
			<source lang=tcl>
			#!/usr/bin/expect

			# full path with the script name can use also $argv0 variable
			set PROGRAM [ dict get [ info frame 0 ] file ]
			set DIRNAME [ file dirname $PROGRAM ]
			send_user $PROGRAM\n $DIRNAME\n
			</source>

	= References =		= References =
	*[https://www.tcl.tk/man/expect5.31/expect.1.html TCL] Language manual		*[https://www.tcl.tk/man/expect5.31/expect.1.html TCL] Language manual
	*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars		*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars
			*[https://stackoverflow.com/questions/23285360/how-to-get-path-of-current-script get path of current script] stackoverflow
			*[https://stackoverflow.com/questions/3838591/fullpath-of-current-tcl-script/24177213#24177213 Fullpath of current TCL script] stackoverflow
			*[https://www.tcl.tk/man/tcl8.5/tutorial/Tcl25.html Information about Files - file, glob] TCL.tk

	*[[VPN Client]]		*[[VPN Client]]

Pio2pio at 21:36, 30 June 2019

2019-06-30T21:36:26Z

← Older revision		Revision as of 23:36, 30 June 2019
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	[http://en.wikipedia.org/wiki/Expect Expect] is an automation and testing tool used to automate a process that receives interactive commands. If you can connect to any machine using ssh, telnet, ftp, etc then you can automate the process with an expect script. This works even with local programs where you would have to interact with a script or program on the command line.		[http://en.wikipedia.org/wiki/Expect Expect] is an automation and testing tool used to automate a process that receives interactive commands. If you can connect to any machine using ssh, telnet, ftp, etc then you can automate the process with an expect script. This works even with local programs where you would have to interact with a script or program on the command line.

	Expect is an extention to the Tcl scripting language so it uses all of Tcl's syntax.		Expect is an extention to the Tcl scripting language so it uses all of '''Tcl's syntax'''.

	Most scripts begin by spawning the process they want to interact with. This is done with the "spawn" command. Like "spawn ssh user@host or spawn ftp host". Then you can begin checking for output with the command "expect". Expect uses regular expressions to find patterns in the output, and when it matches a pattern you send it command with the "send" command. In the simplest form that is how expect works. You start the process and look for patterns in the output. Then send commands based on the matches from the output.		Most scripts begin by spawning the process they want to interact with. This is done with the "spawn" command. Like "spawn ssh user@host or spawn ftp host". Then you can begin checking for output with the command "expect". Expect uses regular expressions to find patterns in the output, and when it matches a pattern you send it command with the "send" command. In the simplest form that is how expect works. You start the process and look for patterns in the output. Then send commands based on the matches from the output.

Pio2pio: /* References */

2019-06-30T21:35:58Z

References

← Older revision		Revision as of 23:35, 30 June 2019
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	= References =		= References =
			*[https://www.tcl.tk/man/expect5.31/expect.1.html TCL] Language manual
	*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars		*[https://likegeeks.com/expect-command/ Expect command and how to automate shell scripts] Includes: autoexpect, if, loops, vars
	*[[VPN Client]]		*[[VPN Client]]

Pio2pio: /* Most used commands and descriptions */

2019-06-30T19:31:35Z

Most used commands and descriptions

← Older revision		Revision as of 21:31, 30 June 2019
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	;set: Set is just how to set variables in Tcl and thus Expect. Things like setting the global timeout value from 10 seconds to 20 with <code>set timeout 20</code>. Another would be grabbing a username from the command line of the expect script and setting it to a variable <code>set username [lindex $argv 0]</code>.		;set: Set is just how to set variables in Tcl and thus Expect. Things like setting the global timeout value from 10 seconds to 20 with <code>set timeout 20</code>. Another would be grabbing a username from the command line of the expect script and setting it to a variable <code>set username [lindex $argv 0]</code>.
	:<code>force_conservative</code> parameter makes expect script to pause for one tenth of a second before sending each character. It is done so your shell will not ignore characters that came to quickly.		:<code>force_conservative</code> parameter makes expect script to pause for one tenth of a second before sending each character. It is done so your shell will not ignore characters that came to quickly.
	:<code>set send_slow {1 .1}</code> will ~~do the same thing. It will make a 100ms~~ pause ~~(second parameter) every 1 symbol (first parameter).~~		:<code>set send_slow {10 .001}</code> will send characters with 1 millisecond pause in between each 10 characters sent

	;close: Closes the connection to the current process.		;close: Closes the connection to the current process.

Pio2pio: /* Most used commands and descriptions */

2019-06-30T19:29:09Z

Most used commands and descriptions

← Older revision		Revision as of 21:29, 30 June 2019
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	;send: Sends string to the current process. Usually this is a command followed by a return character (/r) like send "yourpassword\r". You use the expect command to match the output and decide what to send the current process.		;send: Sends string to the current process. Usually this is a command followed by a return character (/r) like send "yourpassword\r". You use the expect command to match the output and decide what to send the current process.
	:<code>send -s</code> instructs to send characters slow at the rate set in <code>send_slow</code> special variable.		:<code>send -s</code> instructs to send characters slow at the rate set in <code>send_slow</code> special variable.
			:<code>send -h</code> instructs to send send characters as <code>send_human</code>, eg: <code>set send_human {.1 .3 1 .05 2}</code> emulates fast and consistent typist, [https://www.tcl.tk/man/expect5.31/expect.1.html read more...]

	;spawn: Creates a new process by running a given program. This is usually given at the start of the script to begin the process. Examples given earlier were <code>spawn ssh user@host or spawn ftp host</code>. You are starting up (connecting to) the process you want to interact with.		;spawn: Creates a new process by running a given program. This is usually given at the start of the script to begin the process. Examples given earlier were <code>spawn ssh user@host or spawn ftp host</code>. You are starting up (connecting to) the process you want to interact with.

Pio2pio: /* Most used commands and descriptions */

2019-06-30T19:05:47Z

Most used commands and descriptions

← Older revision		Revision as of 21:05, 30 June 2019
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	;send: Sends string to the current process. Usually this is a command followed by a return character (/r) like send "yourpassword\r". You use the expect command to match the output and decide what to send the current process.		;send: Sends string to the current process. Usually this is a command followed by a return character (/r) like send "yourpassword\r". You use the expect command to match the output and decide what to send the current process.
			:<code>send -s</code> instructs to send characters slow at the rate set in <code>send_slow</code> special variable.

	;spawn: Creates a new process by running a given program. This is usually given at the start of the script to begin the process. Examples given earlier were <code>spawn ssh user@host or spawn ftp host</code>. You are starting up (connecting to) the process you want to interact with.		;spawn: Creates a new process by running a given program. This is usually given at the start of the script to begin the process. Examples given earlier were <code>spawn ssh user@host or spawn ftp host</code>. You are starting up (connecting to) the process you want to interact with.