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How to use the "grep/egrep" command to search files.

 
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Top Forums UNIX for Dummies Questions & Answers How to use the "grep/egrep" command to search files.
# 1  
Old 01-09-2009
How to use the "grep/egrep" command to search files.
Hi Team,

I am new to this forum and also trying to learn Unix.

I will highly appriciate your help if you can help me to get the right command .

{{{

I use the command " today | egrep '(10:| 11: )' | grep ERROR " to grep all the files that has been error betweeen 10 to 11 O'clock.

}}}

My Question 1.) If i want to see all the files which has been ERROR between the time , let's say from 10:15 to 11:45 what command should i be using?

Please help.

regards,

Ran
# 2  
Old 01-09-2009
please post the sample log.
# 3  
Old 01-10-2009
egrep -l gives you the list of files that contain the pattern.
# 4  
Old 01-18-2009
Quote:
Originally Posted by ahmedwaseem2000
please post the sample log.

Thanks AHMED for asking for the log. Below is the log from my system. Please help if possible

{{

onestop@uto-prod-tx-01ce0:~$ today | grep -i ERROR
1034601 18.01 19:36 pando_baplie S ERROR
800990 18.01 15:14 (emailrouter) R ERROR
641550 18.01 12:13 (emailrouter) R ERROR
478830 18.01 09:13 (emailrouter) R ERROR
322211 18.01 06:13 (emailrouter) R ERROR

}}

regards,

Ran
# 5  
Old 01-18-2009
Oh my goodness I did it Smilie

I was thinking at first I screwed up because I came up with no results, and was getting frustrated, then I realized the sample you provided did not have 10|11 Smilie

So here is the code with find and awk.. although you can alter that..

Code:
find . -maxdepth 1 -type f | xargs awk '( ( $3 ~ /(10|11|12):[0-9]+/ ) && ( $6 ~ /^ERROR$/ ) ) { print FILENAME" : "$0; }'

You can also just do it using egrep, which is a lot shorter, and uses a pretty good regex..

Code:
egrep -r "(10|11|12):[0-9]+ \([a-zA-Z]+\) [a-zA-Z] ERROR$" *
test.txt:641550 18.01 12:13 (emailrouter) R ERROR

Pretty cool I think. Is this what you were asking?
# 6  
Old 01-19-2009
Quote:
Originally Posted by Rhije
Oh my goodness I did it Smilie

I was thinking at first I screwed up because I came up with no results, and was getting frustrated, then I realized the sample you provided did not have 10|11 Smilie

So here is the code with find and awk.. although you can alter that..

Code:
find . -maxdepth 1 -type f | xargs awk '( ( $3 ~ /(10|11|12):[0-9]+/ ) && ( $6 ~ /^ERROR$/ ) ) { print FILENAME" : "$0; }'

You can also just do it using egrep, which is a lot shorter, and uses a pretty good regex..

Code:
egrep -r "(10|11|12):[0-9]+ \([a-zA-Z]+\) [a-zA-Z] ERROR$" *
test.txt:641550 18.01 12:13 (emailrouter) R ERROR

Pretty cool I think. Is this what you were asking?

Hi Mate,

Sorry i appolozise for posting wrong log and using different command. Here is what i was originally talking about.


Code:
 
onestop@uto-prod-tx-01ce0:~$ today | egrep '(10:|11:)' | grep ERROR
 
Log no      Date/Time                     Connection               R (Direction/Received)
 
 909740  19.01 11:44                 PO_Molineaux_PBS    R    ERROR           
 875981  19.01 11:28                 IFTERA_IN               R    ERROR           
 870310  19.01 11:26                 IFTERA_IN               R    ERROR           
 849500  19.01 11:17                 CMR-PANDO-3          R    ERROR           
 821731  19.01 11:13                 (EDIFACT router)      R    ERROR           
 835160  19.01 11:11                 CMR-PANDO-7          R    ERROR           
 834930  19.01 11:11                 CMR-PANDO-0          R    ERROR           
 829080  19.01 11:08                 IFTERA_IN               R    ERROR           
 827330  19.01 11:06                 CMR-PANDO-9          R    ERROR


I used the both command but seems it is not working.

Here you can see the Error i an getting.

1.) onestop@uto-prod-tx-01ce0:~$ find . -maxdepth 1 -type f | xargs awk '( ( $3 ~ /(10|11|12):[0-9]+/ ) && ( $6 ~ /^ERROR$/ ) ) { print FILENAME" : "$0; }'

find: bad option -maxdepth
find: path-list predicate-list
onestop@uto-prod-tx-01ce0:~$


2.) onestop@uto-prod-tx-01ce0:~$ egrep -r "(10|11|12):[0-9]+ \([a-zA-Z]+\) [a-zA-Z] ERROR$" *
egrep: illegal option -- r
usage: egrep [ -bchilnsv ] [ -e exp ] [ -f file ] [ strings ] [ file ] ...
onestop@uto-prod-tx-01ce0:~$


regards,

Ran
# 7  
Old 01-19-2009
A script like this may work
Code:
counter=0
while read line
do
 counter=`expr $counter + 1`
 if [ $counter -gt 2 ]
 then
 hrs=`echo $line | cut -d" " -f 3 | cut -d":" -f 1`
 mins=`echo $line | cut -d" " -f 3 | cut -d":" -f 2`
  if [ $hrs -eq 10 -a $mins -ge 15 ]
  then
   echo $line
  fi
  if [ $hrs -eq 11 -a $mins -le 45 ]
  then
   echo $line
  fi
 fi
done<logfile

 
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