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Top Forums Shell Programming and Scripting Expect - assigning UNIX command output to a variable Post 302945171 by Chubler_XL on Tuesday 26th of May 2015 11:41:57 PM
Old 05-27-2015
Don't really know what you intend to do with the variable once you have it but this example might get you started:

Code:
#!/usr/bin/expect -f

set timeout 2
spawn -noecho ssh user@host
log_user 0
expect "*assword"
send "password\r"

expect {\$}
send "pidof some_process\r"
expect -re {\r\n(.*)\r\n(.*)\$}
set pidlist $expect_out(1,string)

if {[string length $pidlist] > 1} {
   puts "Found PID(s): $pidlist"
} else {
   puts "No PIDs found"
}

send "exit\r"
expect eof

Here we are matching on a $ symbol for the command prompt. Remove log_user 0 to see actual output while debugging.
 

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runtest(1)						      General Commands Manual							runtest(1)

NAME
runtest - the DejaGnu test driver program SYNOPSIS
runtest [ options ] DESCRIPTION
DejaGnu is a framework for running test suites on GNU tools. It is written in expect, which uses Tcl (Tool command language). runtest is the test driver program; use it to control what tests to run, and variations on how to run them. You can find a comprehensive description of DejaGnu and runtest in The DejaGnu Testing Framework or its Info version, dejagnu.info. OPTIONS
--all Print all test output to screen. By default, only unexpected results are displayed. --baud rate Set the baud rate for a serial line connection. Some serial interface programs (like tip) don't use this value but instead use a separate initialization file. --connect type The type of connection to use. The choices are rlogin, telnet, rsh, kermit, tip and mondfe. --debug Turn on expect internal debugging output. All output is logged to a file called dbg.out. The output of the --strace also goes into this file. --help Prints out a help screen and then exits. --host type The configuration string for the host. --ignore test1.exp test2.exp ... Do not run the specified tests. --mail 'name1 name2 ...' Electronic mail addresses to receive test results. --name hostname The network hostname of the target board. --objdir path path is a directory containing compiled test code. --outdir directory The name of a directory for test log output. --reboot Reboot the target board when runtest initializes (if supported). --srcdir path path is a directory containing test directories. --strace N Turns on expect internal tracing to N levels deep. --target type The configuration string for the target. --tool toolname Specify the tool to be tested. toolname controls the test suite applied, and the associated initialization module. --verbose, -v Turns on more debugging output from test cases and DejaGnu utility code. Use more than once to increase output further. --version, -V Prints out the versions of DejaGnu, expect and Tcl. -D[number] Activate the Tcl debugger.number can be either 1 or 0. If it is 1, then the expect shell will break when it starts to run. All ^C's drop DejaGnu back to the debugger prompt. A 0 starts DejaGnu like normal, but a ^C drops to the debugger prompt. Any file name on the command line is assumed to be a subset of the test names to run. Usually these are the names of the expect test driver, ie... special.exp. Makefile style variables are used to specify tool names and their flags; these and other configuration dependent values are saved in the file site.exp, created during configuration. EXIT CODES
runtest sets the exit code to 1 if any of the tests failed, or sets it to 0 if all the tests passed. SEE ALSO
The DejaGnu Testing Framework (dejagnu.info). This is the DejaGnu manual; its source is the SGML files doc/*.sgml. in the DejaGnu distri- bution. AUTHOR
Rob Savoye (rob@welcomehome.org) 29 Jul 2003 runtest(1)
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