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Grepping only dates from a log file

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# 1  
Old 05-28-2014
Grepping only dates from a log file
Hi All,

I have a log file where every line contains a date and some other data, i want to grep only the date from every line to a different file.

Please help how to get this.

Thanks in advance !!
# 2  
Old 05-28-2014
What format is the date in? If it's dd-mm-yyyy, a crude way is to do this:
Code:
grep -o "[0-9]\{2\}-[0-9]\{2\}-[0-9]\{4\}"

This User Gave Thanks to balajesuri For This Post:
nanz143
# 3  
Old 05-28-2014
Hey Bala,

Thanks for helping,

date format in my log is " mm/dd/yyyy "

using your grep command, i think the same command will work

Code:
grep -o "[0-9]\{2\}-[0-9]\{2\}-[0-9]\{4\}"

pl suggest.

many Thanks !!
Last edited by radoulov; 05-28-2014 at 07:30 AM..
# 4  
Old 05-28-2014
Quote:
Originally Posted by nanz143
Hey Bala,

Thanks for helping,

date format in my log is " mm/dd/yyyy "

using your grep command, i think the same command will work

grep -o "[0-9]\{2\}-[0-9]\{2\}-[0-9]\{4\}"

pl suggest.

many Thanks !!
Here your answer

Code:
grep -o "[0-9]\{2\}/[0-9]\{2\}/[0-9]\{4\}"

This User Gave Thanks to vinhnch For This Post:
nanz143
# 5  
Old 05-28-2014
thank you so much... will test and get back to you ..

---------- Post updated at 06:14 AM ---------- Previous update was at 06:01 AM ----------

Hey bala there is an error,

Code:
grep: illegal option -- o
Usage: grep -hblcnsviw pattern file . . .

My OS is Solaris 10

---------- Post updated at 06:27 AM ---------- Previous update was at 06:14 AM ----------

correction to my question i need to print only dates in the line
# 6  
Old 05-28-2014
Show sample of your log file
# 7  
Old 05-28-2014
Code:
Server1111 I will be changing the characterset used by the O08FTM2 database. mail by alan stanke (Expire: 01/21/2014)

Server2222 From: Windows_L1 (Expire: 01/17/2014)

server3201 From: Windows_L1 (Expire: 01/17/2014)

server3206 From: Windows_L1 (Expire: 01/17/2014)

server3205 From: Windows_L1 (Expire: 01/17/2014)

server3204 From: Windows_L1 (Expire: 01/17/2014)

server1022 Got Cannot Pings after removing from MM after cleanup activity (Expire: 01/19/2014)

server1013 Got Cannot Pings after removing from MM after cleanup activity (Expire: 01/19/2014)

these are few rows of my log, i need to print only the date
Last edited by Scott; 05-29-2014 at 09:02 AM.. Reason: Code tags
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