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unable to read a parameter

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# 1  
Old 05-01-2012
Bug unable to read a parameter
All,

on command prompt when i am testing I am able to get the value of 'msgtime' parameter but in the script I get a space value for it . Please help ..

following is the code snippet -

Code:
grep "Component Manager stopped" msgtime.txt | while read line
                                                 do
                                                     awk '{ print $2}' | sed 's/://g' | read msgtime
                             echo $msgtime  # does not display msgtime instead gives space
                                                done

msgtime.txt looks like this -

Code:
pe.txt.2012-03-28:2012/03/28 11:51:02 [RMI TCP Connection(147)-10.87.130.42] INFO  filenet.vw.ComponentIntegrator  Component Manager stopped.

Please help.
Last edited by Scrutinizer; 05-01-2012 at 02:12 PM.. Reason: code tags
# 2  
Old 05-01-2012
you could use following:
Code:
grep "Component Manager stopped" msgtime.txt | while read line
do
msgtime=`echo $line | awk 'gsub(/:/, "",$2 );{print $2};'`
done

Last edited by 47shailesh; 05-01-2012 at 02:34 PM.. Reason: removed extra space around =
# 3  
Old 05-01-2012
what is the expected output ?

you are not passing any input to awk command

---------- Post updated at 10:06 PM ---------- Previous update was at 10:04 PM ----------

Code:
 awk '/Component Manager stopped/ {gsub(":","",$2);print $2}' msgtime.txt

# 4  
Old 05-01-2012
PHP
Hi ,

47shailesh : I get the following error

Code:
./tivoliscript.ksh[19]: msgtime:  not found.

Please suggest.


Moderator's Comments:
Mod Comment Please click this link: How to use [code][/code] tags
Last edited by Scrutinizer; 05-01-2012 at 02:13 PM.. Reason: code tags
# 5  
Old 05-01-2012
1st error was that ... | read msgtime invokes read in a subshell and therefore the value of msgtime is not accessible outside of that. (edit: well, not that it'd work without an input to awk)

This error is that you cannot put spaces around the = when doing an assignment. msgtime=`echo ...

itkamaraj's solution is a great one, or do you need to capture it and do more processing with $msgtime?

Code:
awk '/Component Manager stopped/ {gsub(":","",$2);print $2}' msgtime.txt | while read msgtime
do
    echo $msgtime
    ...
done

This User Gave Thanks to neutronscott For This Post:
dhirajdsharma
# 6  
Old 05-01-2012
PHP
Guys ,

You are all awesome .. hats off..

I used this
Code:
awk '/Component Manager stopped/ {gsub(":","",$2);print $2}' msgtime.txt | while read msgtime do    # I was using msgtime elsewhere in script but I included it here and its working.. :-) done


Thanks a tonnes.................. :-)

---------- Post updated at 01:24 PM ---------- Previous update was at 12:20 PM ----------

Guys , stuck a bit ..

my log file pe.txt is a huge log file , inorder to get the latest alert I read from tthe bottom

How can I give use awk here to read from the bottom of file and execute -

Code:
tail -r pe.txt | awk '/Component Manager stopped/ {gsub(":","",$2);print $2}' | while read msgtime
                                        do
                                            test $temp -eq $msgtime  
                                            if [ $? -eq 0 ]; then
                                                echo $msgtime
                                                echo "tivoli already generated"
                                            else
                                                   echo "$msgtime" > newfile.txt
                                                touch ComponentManagerDown_on_`hostname`.txt
                                            fi
                                        done

The above is not working. :-(
Last edited by Franklin52; 05-01-2012 at 03:26 PM.. Reason: code tags
# 7  
Old 05-01-2012
what error you are getting ?
This User Gave Thanks to 47shailesh For This Post:
dhirajdsharma
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