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Expect script
Expect is tool for writing interactive scripts to be used with applications like telnet, ftp and such.
It is an extension to the Tcl scripting language.
Example 1
In this example I have the script to query disks from StorEdge 6120 (old storage supports only telnet).
It's just a quick script, can be added many features for checking if disk is okay, etc (maybe do some when find more time).
#!/opt/csw/bin/expect
# debugging: 0=no 1=yes
exp_internal 0
# spawn process output: 0=no 1=yes
log_user 0
# some help
# $expect_out(0,string) keeps only matched characters
# $expect_out(buffer) keeps matched characters + ones that come earlier
puts "\n Check disks in StorEdge 6120 ..... \n"
# variables
set user root
set passwd root-passwd
set cmd "fru stat"
set tmpfile /var/tmp/expect_result
# start process
spawn telnet sds9
# provide username
expect "Login:"
send "${user}\r"
# provide password
expect "Password:"
send "${passwd}\r"
# run command
expect "sds9*"
send "${cmd}\r"
# use regexp for expecting string
expect -re "DISK.*LOOP"
#puts "Only matced charactes \n"
set result $expect_out(0,string)
# put result to a file, tmpfile_id is file ID
set tmpfile_id [open $tmpfile w]
puts $tmpfile_id $result
close $tmpfile_id
if [file exists "$tmpfile"] {system cat $tmpfile | grep -v LOOP}
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And the script output is like :
{host}/var/tmp> expect disk_6120.exp
Check disks in StorEdge 6120 .....
DISK STATUS STATE ROLE PORT1 PORT2 TEMP VOLUME
------ ------- ---------- ---------- --------- --------- ---- ------
u1d01 ready enabled data disk ready ready 29 vol9-1
u1d02 ready enabled data disk ready ready 29 vol9-1
u1d03 ready enabled data disk ready ready 30 vol9-1
u1d04 ready enabled data disk ready ready 27 vol9-1
u1d05 ready enabled data disk ready ready 29 vol9-1
u1d06 ready enabled data disk ready ready 29 vol9-1
u1d07 ready enabled standby ready ready 30 vol9-1
u1d08 ready enabled data disk ready ready 29 vol9-2
u1d09 ready enabled data disk ready ready 30 vol9-2
u1d10 ready enabled data disk ready ready 29 vol9-2
u1d11 ready enabled data disk ready ready 30 vol9-2
u1d12 ready enabled data disk ready ready 29 vol9-2
u1d13 ready enabled data disk ready ready 28 vol9-2
u1d14 ready enabled standby ready ready 31 vol9-2
u2d01 ready enabled data disk ready ready 29 vol10-1
u2d02 ready enabled data disk ready ready 28 vol10-1
u2d03 ready enabled data disk ready ready 31 vol10-1
u2d04 ready enabled data disk ready ready 30 vol10-1
u2d05 ready enabled data disk ready ready 29 vol10-1
u2d06 ready enabled data disk ready ready 28 vol10-1
u2d07 ready enabled unassigned ready ready 25 -
u2d08 ready enabled data disk ready ready 26 vol10-2
u2d09 ready enabled data disk ready ready 24 vol10-2
u2d10 ready enabled data disk ready ready 22 vol10-2
u2d11 ready enabled data disk ready ready 22 vol10-2
u2d12 ready enabled data disk ready ready 23 vol10-2
u2d13 ready enabled data disk ready ready 25 vol10-2
u2d14 ready enabled standby ready ready 23 vol10-2
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Example 2
Here we check access to serial console of HP Integrity server, it must allow SSH.
#!/usr/bin/expect
# debugging: 0=no 1=yes
#exp_internal 1
exp_internal 0
# spawn process output: 0=no 1=yes
log_user 0
# some help
# $expect_out(0,string) keeps only matched characters
# $expect_out(buffer) keeps matched characters + ones that come earlier
# input arguments
set host [lindex $argv 0]
set user [lindex $argv 1]
set passwd [lindex $argv 2]
# check for arguments
if {[llength $argv] != 3 } {
puts "\n Usage: scriptname host user password \n"
puts "\n Example: concheck-hpux.exp g7u1111 g7u1111-c xxxxxxx \n"
puts "Note: the script works only if console allows SSH"
exit 1
}
puts "\n ############ Serial console check for $host ########### \n"
# temp files
set tmpfileilo /tmp/ilo-output.txt
set tmpfile /tmp/console-output.txt
# start process
#spawn telnet ${user}@${host}-c
spawn ssh -o StrictHostKeyChecking=no ${user}@${host}-c
expect "password:"
send "${passwd}\r"
expect "hpiLO->"
# get ilo output
set result_ilo $expect_out(buffer)
set tmpfileilo_id [open $tmpfileilo w]
puts $tmpfileilo_id $result_ilo
close $tmpfileilo_id
if [file exists "$tmpfileilo"] {system cat $tmpfileilo}
if [file exists "$tmpfileilo"] {system rm $tmpfileilo}
# go to Console
send "co\r"
expect "Console Login"
# get console output
set result_con $expect_out(buffer)
set tmpfile_id [open $tmpfile w]
puts $tmpfile_id $result_con
close $tmpfile_id
if [file exists "$tmpfile"] {system cat $tmpfile}
if [file exists "$tmpfile"] {system rm $tmpfile}
exit 0
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Result looks like:
{host}/tmp> expect concheck-hpux.exp
Usage: scriptname host user password
Example: concheck-hpux.exp g7u1111 g7u1111-c xxxxxxx
Note: the script works only if console allows SSH
{host}/tmp> expect concheck-hpux.exp g7u1111 g7u1111-c con_passwd
############ Serial console check for g7u1111 ###########
Hewlett-Packard Integrated Lights-Out 3 for Integrity
(C) Copyright 1999-2013 Hewlett-Packard Development Company, L.P.
MP Host Name: g7u1111
iLO MP Firmware Revision 01.55.02
MP MAIN MENU:
CO: Console
VFP: Virtual Front Panel
CM: Command Menu
CL: Console Log
SL: Show Event Logs
HE: Main Help Menu
X: Exit Connection
[g7u1111] hpiLO->
co
[Use Ctrl-B or ESC-( to return to MP main menu.]
- - - - - - - - - - Prior Console Output - - - - - - - - - -
Console Login
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