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Full Discussion: Expect script to collect logs in expert mode
Top Forums Shell Programming and Scripting Expect script to collect logs in expert mode Post 303003237 by shunya on Sunday 10th of September 2017 09:35:08 PM
Old 09-10-2017
RedHat Expect script to collect logs in expert mode
I am trying to collect logs from a system in expert mode. Where I login to system and then change mode to expert mode and issue command to collect the log. I have a script which works but It waits for 30 mins even though log collection is complete before that. I have two issues with existing script.

1. Since log collection takes really long time (sometimes about 30 minutes). Expect script does not wait for the prompt and exits at timeout value. So I don't get complete O/P. Hence, I added timeout value of 1800 secs. But this one forces script to wait for 30 mins. I would like to exit as soon as I am back on prompt. I tried using expect exact but need some help on this.

2. How can I capture the current prompt itself as a variable and ask Expect to wait until it gets the prompt. or Make a prompt based on Username variable and hostname lie - USERNAME@SYSNAME##.

Here is my current code.
Code:
#!/usr/bin/expect -f
set timeout 5
set hostname [lindex $argv 0]
set username "admin"
set password "password"
set prompt "(>|#|\\\$) $"


spawn ssh $username@$hostname
expect {
    ".*key fingerprint" {send "yes\r"; exp_continue}
    "assword:" {send "$password\r"}
}

expect -re {\$prompt}

send "show product id\r"

expect -re "\nProduct ID: (.*)$prompt"
set PRDID $expect_out(1,string)

#send "hostname\r"
#expect -re "\n (.*)$prompt"
#set HNAME $expect_out(1,string)



expect -re $prompt
send "expert mode\r"
expect -re "assword:" {send "$PRDID\r"}
#send "$PRDID\r"
expect -re $prompt
#set output $expect_out(buffer);

send "show detailed logs\r"
set timeout 1800  ### To wait for 30 mins
## expect -re $prompt
expect -exact "(.*)## $"   ### I tried using expect exact. But it seems something wrong here.
###  expect -exact "\nSA@$HNAME##$"
send -- "\r"
send "exit\r"
#puts [open w] $expect_out(buffer);
expect eof
[root@se scripts]#

 

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LEARN ABOUT OPENDARWIN

sa1

sa1(8)							    BSD System Manager's Manual 						    sa1(8)

NAME

     sa1 -- Generate a system activity daily data file.

SYNOPSIS

     /usr/lib/sa/sa1 [t n]

DESCRIPTION

     The sa1 command is a shell script used to invoke the system activity data collector, sadc.  The binary sample data is collected at intervals
     t seconds apart, in a loop n times.  The binary sample data is written to the standard daily data file, /var/log/sa/sadd where the dd repre-
     sents the current day of the month.

     sa1 is intended to be started by cron.

EXAMPLE CRON ENTRY

     # Starting at 8am collect system activity records
     # every 20 minutes for 12 hours
     # 20 minutes = 1200 seconds
     # 12 hours with 3 samples each hour = 36 loops

     0 8 * * 1-5 /usr/lib/sa/sa1 1200 36

     # After the 12 hour period,
     # collect a system activity report

     30 20 * * 1-5 /usr/lib/sa/sa2 -A

FILES

     /var/log/sa/sadd  Default daily activity file that holds the binary sampling data.  dd are digits that represent the day of the month.

SEE ALSO

     sa2(8), sadc(8), sar(1), iostat(8), vm_stat(1), netstat(1), top(1), sc_usage(1), fs_usage(1), crontab(1), crontab(5)

Mac OS X							    Jul 25 2003 							  Mac OS X
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