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Full Discussion: su with expect...in a single command?
Top Forums Shell Programming and Scripting su with expect...in a single command? Post 302513322 by pkabali on Wednesday 13th of April 2011 01:48:28 AM
Old 04-13-2011
su with expect...in a single command?
Hello
I am trying su from one user to another in a script. Now the person who runs the script(user) cannot have the password for the user he is su -ing to (webuser) .

Here is my script which performs su . This is a hack job based on a few hours of web search.

Code:
#!/usr/local/bin/expect
set pssword [lrange $argv 0 0]
spawn su - webuser -c /home/webuser/testwebuser.sh
expect "Password:" { send "$pssword\r" }
expect "# " { send "q" }
exit

as you can see the script has to run by passing the webuser password as a parameter as such:
Code:
./expectscript.sh PASSWORD

I would be passing the password using plink in an exe file.

All this works fine, I was wondering if there is a way to write the entire script I wrote in a single command format so that I can use it in the plink statement itself thus eliminating the need for ./expectscript.sh which basically calls another script testwebuser.sh?

if testwebuser is performing just a few tasks, would it be possible to eliminate both scripts and directly su to a differnt user and execute commands ( any other language/tool/ solution are also welcome)

example of plink command is

Code:
plink -ssh ip_addr_of_server -l user -pw userpassword "command to be executed"

where command to be executed can be
Code:
/home/user/expectscript.sh PASSWORD

 

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LEARN ABOUT OSF1

uudemon.cleanu

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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