Questions tagged [expect]
Expect is a Unix/Linux extension for the Tcl scripting language. It was designed as an automation and testing tool and it makes it trivial to interact with complex programs, such as remote shells, security maintenance. It has particularly powerful response recognition.
75
questions with no upvoted or accepted answers
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votes
2
answers
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views
Log the output of Expect command
I have made the below expect script and I need to log the output of that script.
SOURCE_FILE=`ls -l *.txt --time-style=+%D | grep ${DT} | grep -v '^d' | awk '{print $NF}' `
if [ -n "${SOURCE_FILE}" ]
...
- 618
4
votes
0
answers
454
views
unbuffer/expect swallows the rcode when its child is signaled
unbuffer is able to pass along the return code of a process under normal circumstance, but if the process you are unbuffering is killed, for instance with a segfault, I see $? as 0 while I expect 139. ...
- 141
2
votes
0
answers
71
views
Waiting until an application is reading (over a TTY)
I'm writing an expect-style program to interact with a command-line application on Linux. Is there any way that my program can know when the application on the other side of the PTY tries to perform a ...
- 21
2
votes
1
answer
494
views
How to spawn expect process with complicated syntax?
In expect it is possible to spawn a process like,
spawn /usr/bin/sftp "$uri" /home/user/dest
Writing it like this makes things really simple, it will be a one liner. However, I am trying to ...
- 165
2
votes
0
answers
346
views
not run expect script in ansible
my script is :
#!/usr/bin/expect
set timeout 1
spawn /etc/init.d/oracleasm configure
expect "Default user to own the driver interface []:\r"
send -- "grid\r"
expect "Default group to own the ...
- 639
2
votes
0
answers
169
views
Using lpass to unlock an ssh key
I'm using the Lastpass CLI (lpass) and want to have it give the passphrase for a private key direct to add-ssh on login as part of .bashrc . the net effect is that I login to Lastpass on when I start ...
- 121
2
votes
1
answer
1k
views
Expect PECL for PHP 7
I just upgraded to PHP 7.0.3, but there is no support for expect. Does anyone know if is it possible to bypass the installation issue? It says:
root@portal:/home# pecl install expect-0.3.3.tgz
pecl/...
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2
votes
0
answers
341
views
Tcl/Expect: Can't set variable value correctly
I'm trying to get IPSec tunnel details from the router. After that fetch lines with IP addresses.
So, I have follow code:
send "show tunnel ipsec remote 10.10.10.10\r"
expect "local"
send "\r"
set ...
- 21
2
votes
0
answers
2k
views
Installing Expect and TCL
I downloaded the source for expect5.45, and am attempting to install it. tclsh is on the system at /usr/bin/tclsh, but I'm not sure if that means the machine also has "tcl" installed?
The ...
user144150
2
votes
0
answers
3k
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bash - expect and variables
I have the followin:
while read line; do
userinfo=$(echo $line | sed 's/@/,/')
IFS=',' read -a address <<< "$userinfo"
userid="${address[0]}"
domain="${address[1]}"
fname=...
- 343
2
votes
1
answer
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views
Expect script + automated telnet process between three Linux machines
Is it possible to do the following by expect script?
I have Linux server that connected to linux_machine1 and linux_machine1 connected to linux_machine2
My Linux server have access only to ...
user58412
2
votes
2
answers
1k
views
Regular expressions with ExpectJ
I've been used the ExpectJ Java library to automate some jobs on a Linux server, however now I need to automate a job that sends a different text response for each execution. Here is the output:
Last ...
- 59
2
votes
1
answer
3k
views
Send command to already running process in shell script
In bash how can I issue a command to a running process I just started?
For example;
# Start Bluez gatttool then Connect to bluetooth device
gatttool -b $MAC -I
connect # send 'connect' to the ...
- 241
1
vote
0
answers
151
views
How do you shut down an expect script in the presence of a complex shell interface?
I am running zsh inside of tmux with prezto, and a basic expect script is exiting improperly:
set timeout -1
spawn $env(SHELL)
expect -regex ".*"
send "echo 'foo'\r"
expect -regex ...
- 961
1
vote
0
answers
186
views
Running expect in systemd unit causes sh syntax error
I am trying to automate the process of connecting to my VPN (SonicWall NetExtender) from my Linux machine by using a systemd unit to call an expect script that supplies the login credentials to the ...
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1
vote
0
answers
195
views
Catching the query results executed in the remote PostGreSQL server through expect command inside Python script
I want to catch the PostGres query results that gets executed in the remote server (passwordless-ssh) via expect command that is used to supply the password for the given PostGres user.
Actually, ...
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1
vote
0
answers
176
views
Upstart script with expect scripting
Please give me advices about expect scripting combined with an upstart script.
There are 3 scripts that I am dealing with right now.
Script A) Java program
PATH: /opt/~~/manager
Script B) ...
- 11
1
vote
1
answer
411
views
Expect output use
I made a script and it looks like this:
#!/usr/bin/expect -f
set ip [lindex $argv 0];
spawn ssh name@server
expect "assword"
set timeout 0.5
send "password\r"
expect "xxxxx"
set timeout 1
send "...
- 11
1
vote
1
answer
3k
views
expect: get error status when spawn command fails
The below is the sample of a script which we execute daily for getting info from the server. For the last couple of days, some server data is missing from the output which is captured on the local ...
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1
vote
1
answer
2k
views
How to make a script "wait" for an operation to finish?
I have two scripts, or maybe better call one a wrapper for the another.
Here comes the wrapper:
#!/usr/bin/expect
set timeout 20
spawn "./installOracleDatabase.sh"
expect "replace Disk1/upgrade/...
- 11
1
vote
1
answer
861
views
Multiple telnet connection in Expect while loop
I need to get the serial number of some devices listed in a file like this:
device_id,ip_address
BIOTERIO, 148.000.00.189
N7K-LAN(JAF1651ANDL), 148.000.0.192
LAB_PESADO, 148.000.000.130
...
1
vote
0
answers
384
views
Shell script to correct authorized key file permissions in large number of hosts
I have a large number of systems that I need to connect to (hosts.txt) and update permissions of the authorized key file prior to pushing keys out to the systems.
I inherited the files that can push ...
- 11
1
vote
1
answer
980
views
Extract contents of jar file to curl using scp
I have a jar file containing a javadoc tree on one box. I need to transfer it to another box and unpack the jar in a specific directory (which may not exist).
I have the username/password of the ...
- 1,001
1
vote
0
answers
2k
views
Expect script seems to ignore prompt (RSA fingerprint confirmation)
The following script seems to simply ignore the rsa fingerprint/continue connecting prompt. I have tried different things, but I simply cannot figure out why it is not working as expected.
#!/usr/bin/...
1
vote
0
answers
580
views
Start a subshell then run commands
Say I have a script that is always run from an interactive shell. I would like this script to launch an interactive subshell that is a replica of the parent (i.e., all environment variables, etc. ...
- 131
1
vote
0
answers
616
views
whether the ssh command successful or not?
I spawned ssh in expect script. in the script i have to check the exit status of ssh command on local machine to make some condition in that script using if/else.
spawn ssh [email protected]
...
- 123
1
vote
0
answers
1k
views
Why the output is not written to log from expect script
I am trying to write the output of the netcat command including the command also to a file by logging into remote servers.
But it is not writing. What am I missing ?
#!/usr/bin/expect -f
set user [...
- 1,349
1
vote
1
answer
535
views
Automating setup of the SSH tunnel
I need to frequently login to many machines but I can only login to them from a proxy machine or using an SSH tunnel (by tunneling through that proxy machine). The problem is that I cannot use ...
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1
vote
0
answers
677
views
Expect can not expect the output
I have problem with my simple code,
the expect can not expect the output
set timeout 10
set user username
set password password
spawn ssh [email protected]
expect "Password:"
send "$password\r"
...
1
vote
1
answer
709
views
Is expect tool availabe for ARM platform
I need to get expect (tool for automating interactive applications) for the ARM platform. Is it a readily cross compiled to ARM and is it available? I tried googling but was unable to get the ...
- 191
1
vote
2
answers
4k
views
expect script for getting output for multiple servers
I am trying to get output of IQN from multiple servers. I am getting the below error.
Error output
spawn /usr/bin/ssh VM2 | /usr/bin/cat /etc/iscsi/initiatorname.iscsi
root@VM2's password:
bash: -c: ...
user155159
0
votes
0
answers
311
views
expect script terminating early in Dockerfile
I've got an expect script that I need to run in a Dockerfile. However, the script is terminating after all of the input is sent. What's interesting is that docker build is succeeding. Here's my MRE:...
- 801
0
votes
1
answer
1k
views
adding ansible_python_interpreter to task with expect module fails to get command with become_user
I'm writing a task for CentOS7 inventory in which have to go through prompt dialogues, which I think is best candidate for andible's expect module.
- name: setup some command
become: yes
...
- 1,929
0
votes
1
answer
34
views
How does one use Expect with Git interactive CLI w/out resorting to alternative strategies?
Typically, I can use the expect mechanic of expect followed by send. In the case of git's interactive shell, however, this does not work and I must use puts.
Is there some trick to restore the normal ...
- 961
0
votes
0
answers
67
views
How can I execute command that has three and/or optional answers in sequence?
I have command to execute: "sudo ssh -L 80:localhost:80 -f -N [email protected]" There are three options that in some case I get them and some not:
password for jenkins user:
"[sudo] ...
- 1
0
votes
1
answer
194
views
Using expect to write a bash script
I am trying to write a bash script using expect. This bash script will reside on a remote server, to be executed at a later date/time. I am using expect to read in a large data file, perform some ...
- 1
0
votes
1
answer
52
views
Sending bunch of commands from txt file in Expect
How to send bunch of commands to Cisco router from txt file like:
configure
class-map match-any popc_fiberpower004_booster_v4
match access-group ipv4 bng_permit_v4
match access-group ipv6 ...
- 1
0
votes
1
answer
866
views
How to send variable value in send command of expect script
Below is my script
proc sendline {line} { send -- "$line\r" }
set slot 1
set port 1
for {set x 0} {$x<48} {incr x} {
sendline {curl -X POST -d '{"command":"dumpcommand&...
0
votes
0
answers
290
views
zsh, zpty: How to read the output of a process after it has exited?
Start some command with zpty:
zpty -d x ; zpty x 'echo hi' ; sleep 1
How do I read its output now that it has exited?
zpty -r x
Returns 2, and this behavior seems expected per the manpage.
- 1,612
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0
answers
23
views
Is it possible to carry local RSA keys to remote computer (live) and use securely?
Is it possible to store an SSH-id in some sort of session (like expect or ssh) that is running on the local machine, swing into a remote box, and execute a shell command in the remote box as if the ...
- 961
0
votes
1
answer
263
views
Load configuration file after ssh using expect
I'm trying to ssh into a remote host, load an environment variable in the .zshrc file on the host, then execute a command using that environment variable.
Here's my script so far,
#!/usr/bin/expect -f
...
- 101
0
votes
0
answers
332
views
spawn_id is empty when setting
I am running an except script where it spawns a c program, waits for an output from the program, and then spawns another program. After that program has finished, I want to send to the original ...
0
votes
1
answer
503
views
Problem with 'string match' and variable
I've been searching for hours and trying multiple things. This is the expect code snippet which works.
foreach line [split $expect_out(buffer) \r\n] {
if {[string match {*word*} $...
0
votes
0
answers
302
views
Using "expect" command to run an interactive program fails
I am trying to solve my question that I've asked here using expect script instead of file redirection. Unfortunately, this solution doesn't work as well (the same behaviour as described in the ...
0
votes
0
answers
102
views
sed error on expect script
I am trying to use a simple sed command inside with a expect script
spawn sed -n '/0032ff00/,/clogoff/p' /tmp/file.tmp > /tmp/file.tmp1
I get an error:
sed: -e expression #1, char 1: unknown ...
- 1
0
votes
0
answers
112
views
In bash `expect` script autogeneratedd with `autoexpect`, there is a `^G` - what does it signify?
In bash expect script autogen'd with autoexpect,I am invoking line completion with a [TAB] in a situation where line completion offers no completions nor changes the input line. The script excerpt ...
- 664
0
votes
0
answers
462
views
Run an os.popen command requiring pseudo terminal from python in bash script
I have a python script which uses
size = os.popen('stty size', 'r').read().split()
to get the terminal window size so I can print text nicely. My problem arises when I have to run this python script ...
0
votes
0
answers
636
views
expect command not working
Hi all i am trying to automate using expect. I have a custom utility to login to openstack k8 distro
the custom command is as below and it asks for an output
kubectl-openstack login --server=...
- 101
0
votes
1
answer
1k
views
Exit out from loop on incorrect password in expect TCL shell script
I have written a code snippet in TCL expect to connect from Server 1 to Server 2 using ssh. Users already may have set passwordless communication between Server 1 and Server 2, or it may ask for a ...
- 3
0
votes
0
answers
777
views
using expect to ssh 1 host, apply some commands, exit the device and ssh another device to apply some other commands
Hi I'm trying to use expect for network troubleshooting between two devices.
in summary, What I'm trying to achieve is to run a script using expect which enters 2 devices and apply commands.
the ...
