09-10-2009
Why do you have so many quotes, is it because you are trying to write the code in-line in a shell script? This may cause some unexpected behaviour... at the very least you should probably use single quotes to surround the expect code. Probably best would be to implement the expect script in a separate file with a shebang line such as #!/usr/bin/expect -f.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I need to run a remote application(GUI) in a client.i.e on running a script in the client machine i should get the GUI application which is running in the server by providing password through the script.Will expect or autoexpect command suit for this scenario?
could anyone help me by posting some... (0 Replies)
Discussion started by: arun_v
0 Replies
2. Shell Programming and Scripting
Hello to all...this is my first post (so please go easy). :)
I feel pretty solid at expect scripting, but I'm running into an issue that I'm not able to wrap my head around. I wrote a script that is a little advanced for logging into a remote Linux machine and changing text in a file using sed.... (2 Replies)
Discussion started by: v1k0d3n
2 Replies
3. Shell Programming and Scripting
Hello hello, did a quick search and didn't turn up anything helpful. I've got a book I'm sure has the answers, but I don't think I'll have time to finish it before this all has to work, so here goes~ if this isn't a good place to post and someone could direct me to another forum I'd appreciate... (1 Reply)
Discussion started by: Vryali
1 Replies
4. Shell Programming and Scripting
This Expect script provides expect with a list of IP addresses to Cisco IPS sensors and commands to configure Cisco IPS sensors. The user, password, IP addresses, prompt regex, etc. have been anonymized. In general this script will log into the sensors and send commands successfully but there are... (1 Reply)
Discussion started by: genewolfe
1 Replies
5. Shell Programming and Scripting
Hi all,
I'm new with expect. I'm developing a quick script to check my sudo access on 100 servers.
So using !/bin/usr/expect doesn't work. So decided to use it as :
expect -c "set timeout -1;\
spawn ssh $IPADDR -l $USERID ;\
match_max 100000;\
expect {
-re... (0 Replies)
Discussion started by: EmersonOrci
0 Replies
6. Shell Programming and Scripting
Hello All,
I am trying to automate an installation process using expect and sh script. My problem is that during the installation process the expected value can change according to the situation.
For Example if this is a first time installation then at step 3 I'll get "Do you want to accept... (0 Replies)
Discussion started by: alokrm
0 Replies
7. Programming
Hi,
Am very new to expect scripting..
Can You please suggest me how to call an expect script inside another expect script..
I tried with
spawn /usr/bin/ksh
send "expect main.exp\r"
expect $root_prompt
and
spawn /usr/bin/ksh
send "main.exp\r"
expect $root_prompt
Both... (1 Reply)
Discussion started by: Priya Amaresh
1 Replies
8. Programming
I have an expect script called remote that I want to call from inside my expect script called sudoers.push, here is the code that is causing me issues:
set REMOTE "/root/scripts/remote"
...
log_user 1
send_user "Executing remote script as $user...\n"
send_user "Command to execute is: $REMOTE... (1 Reply)
Discussion started by: brettski
1 Replies
9. Programming
I'm fairly new to scripting so this might not be possible.
I am using Expect with Cisco switches and need to capture the string after finding the expect request. For example, when I issue "show version" on a Nexus switch, I'm looking to capture the current firmware version:
#show version
... (0 Replies)
Discussion started by: IBGaryA
0 Replies
10. Shell Programming and Scripting
Hi,
does the expect script tries to match for everyline on the screen irrespective of the prompts???
spawn ./Inst.sh
expect "path? (Y/N)"
send "Y\r"
expect "folder path"
send "$DIR1\r"
expect "path? (Y/N)"
send "Y\r"
expect "folder path2"
send "$DIR2\r"
After the installer... (11 Replies)
Discussion started by: premseth
11 Replies
LEARN ABOUT LINUX
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)
NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)