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Full Discussion: Expect - assigning UNIX command output to a variable
Top Forums Shell Programming and Scripting Expect - assigning UNIX command output to a variable Post 302944857 by oseri on Friday 22nd of May 2015 05:54:26 PM
Old 05-22-2015
Expect - assigning UNIX command output to a variable
Hi,

I'm writing a script that connects through ssh (using "expect") and then is supposed to find whether a process on that remote machine is running or not. Here's my code (user, host and password are obviously replaced with real values in actual script):

Code:
#!/usr/bin/expect
set timeout 1
spawn ssh user@host
expect "*assword"
send "password\r"

expect "$"
#now I would do something like : 
# if [ -z "\$(pidof some_process)"]
# or set found_pid $(pidof some_process)

I'm at loss how to set a variable using the things that pidof would output and make a conditional statement with it...

I've googled it for quite a some time but couldnt find an answer... Thanks in advance!
Last edited by oseri; 05-22-2015 at 07:05 PM..
 

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LEARN ABOUT MINIX

rsh

RSH(1)							      General Commands Manual							    RSH(1)

NAME

       rsh - remote shell

SYNOPSIS

       rsh [-n] [-l username] host [command]
       host [-n] [-l username] [command]

DESCRIPTION

       Rsh  connects to the specified host, and executes the specified command.  Rsh copies its standard input to the remote command, the standard
       output of the remote command to its standard output, and the standard error of the remote command to its standard error.   Interrupt,  quit
       and terminate signals are propagated to the remote command; rsh normally terminates when the remote command does.

       The  remote  username  used is the same as your local username, unless you specify a different remote name with the -l option.  This remote
       name must be equivalent (in the sense of rlogin(1)) to the originating account; no provision is made for specifying a password with a  com-
       mand.

       If you omit command, then instead of executing a single command, you will be logged in on the remote host using rlogin(1).

       Shell  metacharacters  which  are  not  quoted  are interpreted on local machine, while quoted metacharacters are interpreted on the remote
       machine.  Thus the command

	      rsh otherhost cat remotefile >> localfile

       appends the remote file remotefile to the localfile localfile, while

	      rsh otherhost cat remotefile ">>" otherremotefile

       appends remotefile to otherremotefile.

OPTIONS

       -l username
	      Specify the remote user name.

       -n     Connect standard input of the remote command to /dev/null.  Do this if rsh should not inadvertently read from standard input.

SEE ALSO

       rcp(1), rlogin(1), rhosts(5).

BUGS

       You cannot run an interactive command (like rogue(6) or vi(1)); use rlogin(1).

4.2 Berkeley Distribution					  April 29, 1985							    RSH(1)
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