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EXPECT Bash Script Error Control

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# 1  
Old 09-26-2014
EXPECT Bash Script Error Control
Hello Geeks once more,

Thanks for all the help you have been rendering..

I have a script that depends on the output of an expect statement but sometimes the main script misbehaves which I believe is a result of SSH communication error, how can I apply an error control to know whether the EXPECT script is working?

Code:
#!/usr/bin/bash

#### First Data Collection
pdpsub() {
/usr/local/bin/expect /gsn/pdp/pdp_expect $1 > /tmp/$$pdp

##ATTEMPTED ACTIVATIONS____APN
attwebfirst=`cat /tmp/$$pdp | /usr/sfw/bin/ggrep -A 20 "web.net" | grep "pdp-attempted-activation:" | awk '{print $2}' | sed 's/^[ \t]*//;s/[ \t]*$//'
 | sed 's/[^0-9]*//g'`

# 2  
Old 09-26-2014
That really depends on what the expect script is doing and how it works.

Does the expect script return a proper error code?

Also: Whenever you find yourself doing grep | grep | cut | sed | kitchen | sink, it's time to replace the mess with one awk and be done with it.
# 3  
Old 09-26-2014
Simplification using one awk instead of cat, awk, two seds, and two greps:

Code:
VAR=`awk '/dump_mask/ { L=CTX+2 }; ((--L)>0) && /pdp-attempted-activation:/ { sub(/^[ \t]*[^0-9]*/, ""); print $2 }' CTX=20 /tmp/$$pdp`

This User Gave Thanks to Corona688 For This Post:
Kibou
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