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Issue while executing script

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# 1  
Old 09-30-2012
Issue while executing script
Hi,

I'm trying to use the below command in a shell script, but couldn't.
The command is working fine when I'm executing from the dollar prompt i.e. shell.

Command:
Code:
 grep -i fail /home/applmgr/error.log |egrep -i "`date  --date="-4  day" +"%m/%d/%Y"`|`date --date="-4 day" +"%m/%d/%y"`" |egrep -i "dbf|ctl|redo|prop|conf|xml"|wc -l

I tried putting the command in `` and it's throwing the below error.

Code:
-bash: command substitution: line 1: unexpected EOF while looking for matching `"'
-bash: command substitution: line 2: syntax error: unexpected end of file
-bash: command substitution: line 1: syntax error near unexpected token `|'
-bash: command substitution: line 1: `|'
-bash: command substitution: line 1: unexpected EOF while looking for matching `"'
-bash: command substitution: line 2: syntax error: unexpected end of file
date: extra operand `+%m/%d/%y'
Try `date --help' for more information.

And when I tried putting it in $(), it's throwing the error.
Code:
-bash: 3: command not found

Please help me out to resolve the issue.

Regards,
Venkatesh.
Last edited by Scrutinizer; 09-30-2012 at 10:11 AM.. Reason: code tags
# 2  
Old 09-30-2012
What exactly are you trying to achieve with this pipeline? There might be better ways.
# 3  
Old 09-30-2012
I'm searching for the word "failure" in that log file and checking for the date format either 'mm/dd/yy' or 'mm/dd/yyyy' (4 days older).

And in the end only the failures which has any of the keywords mentioned in the egrep command are considered.
# 4  
Old 09-30-2012
With perl:
Code:
dt1=$(date --date="-4 day" +"%m/%d/%Y")
dt2=$(date --date="-4 day" +"%m/%d/%y")

perl -e '$dt1=shift @ARGV;
$dt2=shift @ARGV;
while(<>) {
 $c++ if(/fail/i && /($dt1)|($dt2)/ && /(dbf)|(ctl)|(redo)|(prop)|(conf)|(xml)/i )
}
print $c,"\n"' $dt1 $dt2 /home/applmgr/error.log

And if you want to use your pipeline, modify it as:
Code:
grep -i fail /home/applmgr/error.log|egrep -i "(`date --date="-4 day" +"%m/%d/%Y"`)|(`date --date="-4 day" +"%m/%d/%y"`)" |egrep -i "(dbf)|(ctl)|(redo)|(prop)|(conf)|(xml)"|wc -l

Last edited by elixir_sinari; 09-30-2012 at 09:49 AM..
# 5  
Old 09-30-2012
Just an addition to that , the below command works fine at times and gets error out suddenly. Couldn't understand what's exactly wrong here

---------- Post updated at 07:24 AM ---------- Previous update was at 07:21 AM ----------

Thanks for your reply.I'm trying to understand what's wrong I'm doing with the shell script than getting the perl equivalent.

Can you please help.
# 6  
Old 09-30-2012
Check post #4 now.
Would you post the part of the script where you are using this command pipeline?
Are you trying to use a statement like var=`<your pipeline>`. It seems so. This is one of the reasons for avoiding back-ticks for command substitution. If you need to nest them, you have to escape the back-ticks within the outermost pair of back-ticks.
Try something like var=$(<your-pipeline>)
And you can't have a statement like $(<your-pipeline>) by itself. That will try to execute the output of the command substitution (3 in your case) as a command.
Last edited by elixir_sinari; 09-30-2012 at 09:46 AM..
# 7  
Old 09-30-2012
That's correct, I'm trying to use it like var=$(<command>).
It appears to work at times and fails too. So, Couldn't understand what exactly is wrong with the approach.
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