I need a shell script using which I can fetch data from command prompt. I need to fetch data from the command prompt of a router. When I write commands in a shell script it goes the prompt but not executing the next command. So running the script just stuck in the prompt. Bellow is my script file
#!/bin/sh
ccli
rsc
where ccli is the command to enter the prompt and rsc is the command to fetch some infomation.
So please suggest some method.
If ccli reads commands from stdin (which I don't know), you might get further with
printf 'rsc\n' | ccli
For more complicated tasks I suggest you look into expect which was invented for the sole reason of driving interactive programs in a scripted way.
Related
I am writing an initial setup shell script for a Mac.
When I run the script, it asks for the password several times.
Is there any way to make this happen only once during script execution?
If possible, I would like to know how to actively ask for it at the beginning of the script, instead of asking for it when some command requires it.
I have a program that I work with, that has an onboard lua compiler to allow for custom written actions.
Since the tool itself is very limited, especially if it goes for complex reactions over networks, I want to use Powershell over lua.
Methods like os.execute() or io.popen() use the standard command line from windows and not Powershell.
Is there a way to use Powershell with lua?
I tried to write a command line script with the Powershell editor and run this script with os.execute, but it opens it as a textfile, it would be better to write the commands directly in lua but if there is no other way, executing a Powershell script directly would also be fine. (In Windows itself you can execute the script with right mouse "click/Execute with Powershell")
-- You can generate PowerShell script at run-time
local script = [[
Write-Host "Hello, World!"
]]
-- Now create powershell process and feed your script to its stdin
local pipe = io.popen("powershell -command -", "w")
pipe:write(script)
pipe:close()
Your description of the problem makes it sound like you're using a command such as os.execute("powershellscript.ps1"), and that call invokes cmd.exe with your string as the proposed command line. Normally, Windows will open a .PS1 file for editing; this was a deliberate decision for safety. Instead, try altering the os.execute() command to explicitly call PS: os.execute("powershell.exe -file powershellscript.ps1"). If you need to pass parameters to your script, enclose them in {}. See https://msdn.microsoft.com/en-us/powershell/scripting/core-powershell/console/powershell.exe-command-line-help for more info on invoking PowerShell from the command line.
I have a shell script that is using echo to give a continuous output (the progress of an rsync) that I am using AppleScript to run with administrator privileges. Before I was using NSTask to run the shell script, but I couldn't find a way to run it with the privileges that it needed, so now I am using applescript to run it. When it was running via NSTask, I could use an output pipe and waitForDataInbackgroundAndNotify to get the continuous output and put it into a text field, but now that I am using AppleScript, I cannot seem to find a way to accomplish this. The shell script is still using echo, but it seems to get lost in the AppleScript "wrapper." How do I make sure that the AppleScript sees the output from the shell script and passes it on to the application? Remember, this isn't one single output, but continuous output.
Zero is correct. When you use do shell script, you can consider it similar to using backticks in perl. The command will be executed, and the everything sent to STDOUT will be returned as the result.
The only work around would be to have the your command write the output to a temporary file and then use do shell script "foo" without waiting. From there, you can read from the file sequentially using native AppleScript commands. It's clunky, but it'll work in a pinch.
I am attempting to write an expect script, which executes/runs another shell script. This shell script configures an emulator, so the expect script is intended to automatically configure the emulator by sending back the appropriate data. However, when I wrote exec followed by the name of the shell script in my expect script, nothing happened. The console just sits and waits. Entering strings and whatnot does not appease the script. Failure to launch. DOA... I read from other posts that using exec is not a good fit when interacting with the subprogram is necessary.
Any advice for how I can execute the shell script within the expect script then?
Thanks!
If you want to interact with the shell script, you need to spawn it, then expect to see patterns and send responses.
If you're brand new to expect, check out the book "Exploring Expect" by the author of expect Don Libes.
I am running a unix command say ftp to a remote machine through a shell script.I have to pass the userid and password through the script accordingly.How can i do that?
Best way to supply username/passwords from scripts would be to use 'expect' scripting.
Here is a small example : http://www.linuxquestions.org/questions/linux-software-2/auto-ssh-login-expect-script-624047/
. It shows using expect to provide password for ssh, ftp should be very similar.
Redirect the ftp command inside your shell script
ftp ..... > ftp.log
Do you mean you want to get the result that the command (say, ftp) wrote to the terminal as a value inside the script?
Use backticks. For example:
x=`ftp ...`
will run the ftp command, and take the text of its stdout and store it in the variable x.