Give an answer to a question that is asked after a command has been run with in a script.

[jgonz...@gmail.com]

I run a command to start the splunk software and get asked a question. I want to be able to answer the question with a y within the script. I have tried to pass in a y but nothing happens, no y gets printed at the end of the question or when I try to redirect a file with the y still nothing happens. See the different code I have tried and output.
#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start` < /var/tmp/answer

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:

#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start` < y

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:

#!/bin/sh
#
set -x
echo "y" | `/opt/splunkforwarder/bin/splunk start`

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
+ echo y
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:

#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start` |echo "y"

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
+ echo y
y
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:


[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:
#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start`' <<-EOF >y

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:

#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start`' << "y"'

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
++ /opt/splunkforwarder/bin/splunk start
Do you agree with this license? [y/n]:

#!/bin/sh
#
set -x
`/opt/splunkforwarder/bin/splunk start`' <<-EOF
y
EOF

[root@ct-eng-fmq02-devint tmp]# ./splunk.sh
./splunk.sh: line 5: unexpected EOF while looking for matching `''
./splunk.sh: line 9: syntax error: unexpected end of file

[Mirko K.]

On 09.10.2012 23:57, jgonz...@gmail.com wrote:
> I run a command to start the splunk software and get asked a
> question. I want to be able to answer the question with a y
> within the script. I have tried to pass in a y but nothing
> happens, no y gets printed at the end of the question or when I
> try to redirect a file with the y still nothing happens. See the
> different code I have tried and output.

[SNIP]

You probably need "expect"

http://www.thegeekstuff.com/2010/10/expect-examples/
http://linux.die.net/man/1/expect

[Kaz Kylheku]

On 2012-10-09, jgonz...@gmail.com <jgonz...@gmail.com> wrote:
> I run a command to start the splunk software and get asked a question.

The program seems to be, quite annoyingly, to be opening the controlling
tty, rather than obtaining the answer from standard input.

> [root@ct-eng-fmq02-devint tmp]# ./splunk.sh
> ++ /opt/splunkforwarder/bin/splunk start
> Do you agree with this license? [y/n]:

I'm surprised you have to agree with a license each time you start
the software.

Agreeing with a license ought to be an installation-time concern, not a
run-time one.

Why don't you take it up with splunk's customer support.

[Bill Marcum]

On 10/09/2012 05:57 PM, jgonz...@gmail.com wrote:
> I run a command to start the splunk software and get asked a
> question. I want to be able to answer the question with a y within
> the script. I have tried to pass in a y but nothing happens, no y
> gets printed at the end of the question or when I try to redirect a
> file with the y still nothing happens. See the different code I have
> tried and output.
> #!/bin/sh
> #
> set -x
> `/opt/splunkforwarder/bin/splunk start` < /var/tmp/answer
>

Did you really write backquotes around the command each time?
You have no idea what the quotes mean, but you don't need them here.

> #!/bin/sh
> #
> set -x
> echo "y" | `/opt/splunkforwarder/bin/splunk start`
>

This should work if you remove the `backquotes`.

[jgonz...@gmail.com]

Bill Marcum

Taking the `backquotes` off just has the whole big license paragraph scroll up but the command still does not work. It echos the y before the question comes out, see below. I am trying to get thei sscript running so I can deploy it to all the servers and run it to install and startup splunk software. See below

echo "y" | /opt/splunkforwarder/bin/splunk start
y
::::::::::::::
/opt/splunkforwarder/license-eula.txt
::::::::::::::
SPLUNK SOFTWARE LICENSE AGREEMENT

THIS SPLUNK SOFTWARE LICENSE AGREEMENT (THE "AGREEMENT") GOVERNS ALL SOFTWARE
PROVIDED BY SPLUNK INC. ("SPLUNK") INCLUDING FREE SPLUNK SOFTWARE ("FREE
SOFTWARE") AND SOFTWARE PURCHASED THROUGH SPLUNK'S ONLINE STORE OR OTHER
CHANNELS ("PURCHASED SOFTWARE"), COLLECTIVELY THE SPLUNK SOFTWARE ("SOFTWARE")
AND ANY AND ALL UPDATES, UPGRADES, AND MODIFICATIONS THERETO. CONFIRMATION OF
YOUR ORDERS ("ORDER CONFIRMATION") WILL BE DEEMED INCORPORATED INTO AND MADE
PART OF THIS AGREEMENT.

YOU WILL BE REQUIRED TO INDICATE YOUR AGREEMENT TO THESE TERMS AND CONDITIONS
IN ORDER TO DOWNLOAD THE SOFTWARE AND REGISTER WITH SPLUNK IN ORDER TO OBTAIN
LICENSE KEYS NECESSARY TO COMPLETE THE INSTALLATION PROCESS FOR PURCHASED
SOFTWARE. BY CLICKING ON THE "YES" BUTTON, DOWNLOADING OR INSTALLING THE
SOFTWARE, OR USING ANY MEDIA THAT CONTAINS THE SOFTWARE, YOU ARE CONSENTING
TO BE BOUND BY THIS AGREEMENT.

IF YOU AGREE TO THESE TERMS ON BEHALF OF A BUSINESS, YOU REPRESENT AND WARRANT
THAT YOU HAVE AUTHORITY TO BIND THAT BUSINESS TO THIS AGREEMENT, AND YOUR
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[Icarus Sparry]

On Wed, 10 Oct 2012 17:55:17 -0700, jgonza1495 wrote:

> On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:
>> I run a command to start the splunk software and get asked a question.
>> I want to be able to answer the question with a y within the script. I
>> have tried to pass in a y but nothing happens, no y gets printed at the
>> end of the question or when I try to redirect a file with the y still
>> nothing happens. See the different code I have tried and output.
>>

[snip]

> Taking the `backquotes` off just has the whole big license paragraph
> scroll up but the command still does not work. It echos the y before the
> question comes out, see below. I am trying to get thei sscript running
> so I can deploy it to all the servers and run it to install and startup
> splunk software. See below
>
> echo "y" | /opt/splunkforwarder/bin/splunk start
> y
> ::::::::::::::
> /opt/splunkforwarder/license-eula.txt
> ::::::::::::::
> SPLUNK SOFTWARE LICENSE AGREEMENT
>
> THIS SPLUNK SOFTWARE LICENSE AGREEMENT (THE "AGREEMENT") GOVERNS ALL
> SOFTWARE PROVIDED BY SPLUNK INC. ("SPLUNK") INCLUDING FREE SPLUNK
> SOFTWARE ("FREE SOFTWARE") AND SOFTWARE PURCHASED THROUGH SPLUNK'S

[ 120 more lines of license]

> waiver, modification or amendment of any provision of this Agreement
> will be effective only if in writing and signed by duly authorized
> representatives of both parties.
> Do you agree with this license? [y/n]:

So it looks like /opt/splunkforwarder/bin/splunk might be a script and it
is using a program such as "more" to page out the license file, and then
read the user response.

You could try seeing if a delay works, e.g.

{ sleep 3 ; echo y ; } | /opt/splunkforwarder/bin/splunk start

You could see if 'expect is installed. If so then

#!/usr/bin/enc expect
spawn /opt/splunkforwarder/bin/splunk start
expect {\[y/n]: } { send -- y\r }
interact


might do the trick. If you have expect then you probably also have
"autoexpect", which can write this stuff for you. Just type

autoexpect -p /opt/splunkforwarder/bin/splunk start

do whatever you need, and then when you have finished autoexpect
will write an expect program to repeat it.

You could see if /opt/splunkforwarder/bin/splunk is actually a script and
see if the license allows you to change it. If se just remove the test
to see if you have accepted the license.

You could ask Splunk Software why they require you to accept the license
each time, rather than remember that you have agreed to it. If they can't
even do that simple step then you might wonder how much value there is in
the rest of their software.

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

Tcarus running the command { sleep 3 ; echo y ; } | /opt/splunkforwarder/bin/splunk start does not work even with the delay it prints out the y before the license paragraph comes up, see below. Even if I put the splunk start in front of th echo y it still does not work.

[root@ct-eng-fmq02-devint tmp]# { sleep 3 ; echo y ; } | /opt/splunkforwarder/bin/splunk start

y
::::::::::::::
/opt/splunkforwarder/license-eula.txt
::::::::::::::
SPLUNK SOFTWARE LICENSE AGREEMENT

THIS SPLUNK SOFTWARE LICENSE AGREEMENT (THE "AGREEMENT") GOVERNS ALL SOFTWARE
PROVIDED BY SPLUNK INC. ("SPLUNK") INCLUDING FREE SPLUNK SOFTWARE ("FREE

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

Icarus when I run this command I get the y to come out after the question but it just sits there and does not return.
{ sleep 3 ; echo y ; } | /opt/splunkforwarder/bin/splunk start | { sleep 3 ; echo y ; }
Do you agree with this license? [y/n]: y

[Icarus Sparry]

On Wed, 10 Oct 2012 23:04:03 -0700, jgonza1495 wrote:

> On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:
>> I run a command to start the splunk software and get asked a question.
>> I want to be able to answer the question with a y within the script. I
>> have tried to pass in a y but nothing happens, no y gets printed at the
>> end of the question or when I try to redirect a file with the y still
>> nothing happens. See the different code I have tried and output.

> Icarus when I run this command I get the y to come out after the
> question but it just sits there and does not return.
> { sleep 3 ; echo y ; } | /opt/splunkforwarder/bin/splunk start | { sleep
> 3 ; echo y ; }
> Do you agree with this license? [y/n]: y

Interesting, but not too unexpected.

Looking at the parts, the first '{ sleep 3 ; echo y ; }' pauses for 3
seconds and then outputs a 'y' and a newline. This is fed into the splunk
start command. The output of the splunk start command (the 140 lines of
license agreement) is fed into the second '{ sleep 3 ; echo y ; }', which
doesn't do anything with it and then outputs the 'y' after 3 seconds.

The fact that you see the 'Do you agree' means that the program is either
printing this message to stderr or to /dev/tty. If the latter then it is
probably reading the response from /dev/tty as well.

You could try (all on one line)

{ sleep 3 ; echo y ; sleep 20 ; } | ssh -t localhost /opt/splunkforwarder/
bin/splunk start

This assumes you have 'ssh' set up and arranged it so it doesn't need a
password. If you have 'rsh' or 'telnet' access to the machine then you
can do something simular. Can you tell us what the output of the
following two commands are

file /opt/splunkforwarder/bin/splunk
wc /opt/splunkforwarder/bin/splunk

are?

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

Icarus the output of file /opt/splunkforwarder/bin/splunk and wc /opt/splunkforwarder/bin/splunk are below.

file /opt/splunkforwarder/bin/splunk
/opt/splunkforwarder/bin/splunk: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.4.0, stripped

wc /opt/splunkforwarder/bin/splunk
828 7078 260800 /opt/splunkforwarder/bin/splunk

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

I ran the expect script below but it required me to hit enter while the license paragraph scrolled up the screen and when it got to the question part no y was put in by the expect script.

[root@ct-eng-fmq02-devint tmp]# more splk.exp
#!/usr/bin/expect

spawn /opt/splunkforwarder/bin/splunk start
expect {\[y/n]]: } {send -- y\r }
interact

Output of the script above.

EXTENSION LICENSE. Splunk further grants to You a non-exclusive, worldwide,
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extensions to access the Splunk API or Example Modules for Your use in
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If you want to distribute or provide to any third parties Your Extensions,
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EXPORT. You agree to comply fully with all relevant export laws and
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GOVERNMENT RESTRICTED RIGHTS. The Software shall be classified as "commercial
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[Mirko K.]

jgonz...@gmail.com wrote:

> I ran the expect script below but it required me to hit enter while the
> license paragraph scrolled up the screen and when it got to the question
> part no y was put in by the expect script.
>
> [root@ct-eng-fmq02-devint tmp]# more splk.exp
> #!/usr/bin/expect
> spawn /opt/splunkforwarder/bin/splunk start
> expect {\[y/n]]: } {send -- y\r }
> interact

Try this expect script:

#!/usr/bin/expect
spawn /opt/splunkforwarder/bin/splunk start
expect "\[y/n]]:"

send "y\r"
interact


(And, BTW, please improve your posting style. In particular snip non-
relevant parts from the post to which you reply. And please don't repost
that entire license all the time. Thank you. :-) )

[Mirko K.]

Mirko K. wrote:

> jgonz...@gmail.com wrote:
>
>> I ran the expect script below but it required me to hit enter while the
>> license paragraph scrolled up the screen and when it got to the question
>> part no y was put in by the expect script.
>>
>> [root@ct-eng-fmq02-devint tmp]# more splk.exp
>> #!/usr/bin/expect
>> spawn /opt/splunkforwarder/bin/splunk start
>> expect {\[y/n]]: } {send -- y\r }
>> interact
>
> Try this expect script:
>
> #!/usr/bin/expect
> spawn /opt/splunkforwarder/bin/splunk start
> expect "\[y/n]]:"
> send "y\r"
> interact

Sorry, I missed the part about a pager showing the license. So, if you
really need to hit Enter repeatly, try the following. Adjust the amount of
"\r" to the number of times you need to hit Enter to reach the end of the
license.

#!/usr/bin/expect
spawn /opt/splunkforwarder/bin/splunk start
send "\r\r\r"

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

Ran the below and no y gets printed after the question comes up.

#!/usr/bin/expect
spawn /opt/splunkforwarder/bin/splunk start
expect "\[y/n]:"

send "y\r\r"
interact

out put is "Do you agree with this license? [y/n]:" and sits there waiting for input something and hit enter. That is not what I want. I want the script to type a y at the end of the question and send a caraige return so the splunk daemons can startup.

[Icarus Sparry]

Or, since the original poster has 'expect', see if you also have
'autoexpect'. If so then run

autoexpect -p /opt/splunkforwarder/bin/splunk start

press the returns as needed to page through the license, answer the
question with a 'y' and return etc. When the program ends you will have a
file 'script.exp' in the current directory. To start this program in the
future just run './script.exp'

[Icarus Sparry]

On Thu, 11 Oct 2012 08:26:34 -0700, jgonza1495 wrote:

> On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:
>> I run a command to start the splunk software and get asked a question.
>> I want to be able to answer the question with a y within the script. I
>> have tried to pass in a y but nothing happens, no y gets printed at the
>> end of the question or when I try to redirect a file with the y still
>> nothing happens.

[snip]

>
> Icarus the output of file /opt/splunkforwarder/bin/splunk and wc
> /opt/splunkforwarder/bin/splunk are below.
>
> file /opt/splunkforwarder/bin/splunk /opt/splunkforwarder/bin/splunk:
> ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked
> (uses shared libs), for GNU/Linux 2.4.0, stripped
>
> wc /opt/splunkforwarder/bin/splunk 828 7078 260800
> /opt/splunkforwarder/bin/splunk

OK, so it is executable. Pity! See my other answer in this thread.

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

I did run autoexpect -p /opt/splunkforwarder/bin/splunk start and it did create a expect script script.exp. I copied that expect scripts(script.exp)to another server and ran it it got to this point and hit enter or space bar nothing happens. This royally sucks.

purposes (which shall include use by consultants, accountants, auditors
and attorneys hired to perform services for you) and only subject to the
following conditions: you may use each Splunk Server with an Enterprise
license to index no more than the peak daily volume of uncompressed data

--More--(16%)

[jgonz...@gmail.com]

On Tuesday, October 9, 2012 2:57:01 PM UTC-7, (unknown) wrote:

I for got to show the script.exp the contenance.
#!/usr/bin/expect -f
set timeout -1
spawn /opt/splunkforwarder/bin/splunk start
match_max 100000
expect -exact "[7m--More--(7%)[27m"
send -- " "
expect -exact "[7m--More--(17%)[27m"
send -- " "
expect -exact "[7m--More--(26%)[27m"
send -- " "
expect -exact "[7m--More--(36%)[27m"
send -- " "
expect -exact "[7m--More--(46%)[27m"
send -- " "
expect -exact "[7m--More--(55%)[27m"
send -- " "
expect -exact "[7m--More--(65%)[27m"
send -- " "
expect -exact "[7m--More--(75%)[27m"
send -- " "
expect -exact "[7m--More--(84%)[27m"
send -- " "
expect -exact "[7m--More--(94%)[27m"
send -- " "
expect -exact "Do you agree with this license? \[y/n\]: "
send -- " "
expect -exact "
send -- "y\r"
expect -exact "Do you agree with this license? \[y/n\]: "
send -- "y\r"
expect eof

[Icarus Sparry]

The reason why it did this is because you either had a different license
file or a different screen size. The script was looking for it to say
17%, not 16%.

However we are getting closer. Try

#!/usr/bin/expect -f
set timeout 2
set match_max 100
expect -exact "27m" { send -- " " ; exp_continue ; } "y/n\] : "
send -- y
expect eof


PLEASE cut down on the amount you are quoting, and please reply to the
latest message in the thread.

[jgonz...@gmail.com]

Icarus,

Thanks a lot that worked. You were a big help.