trying to cope with awk difficulties - Shell Programming and Scripting

amatuer_lee_3 · #1 (**permalink**) 05-09-2008

Quote:

echo "Enter month: "

read MONTH

awk '$3=="$MONTH" {print $1, $2, $3, $4, $5, $6}' *.hits

The data we are searching is populated in this way:

----IP---------DAY----MONTH----DATE--------TIME---------YEAR
12.3234.34-----Fri------Nov-------15-------18:05:14 GMT---2008

I want the user to be able to search for the data according to month and year.
However, I cannot quite figure out how to do this. Above is the code i have and i can't understand what is wrong?

If we try and put in the variable e.g Nov, it wont give us any results.

It works only if instead of "$MONTH" we enter the month itself e.g Nov or Sep.

robotronic · #2 (**permalink**) 05-09-2008

You need to add single quotes to pass inside awk the shell variable:

Code:

awk '$3=='"$MONTH"' {print $1, $2, $3, $4, $5, $6}' *.hits

amatuer_lee_3 · #3 (**permalink**) 05-09-2008

Quote:

awk '$3=='"$MONTH"' {print $1, $2, $3, $4, $5, $6}' *.hits

I have tried this and it did not work. I also tried:

Quote:

awk '$3=='$MONTH' {print $1, $2, $3, $4, $5, $6}' *.hits

and this also didnt work.

I'm a bit stumped.

Shivdatta · #4 (**permalink**) 05-09-2008

You need to specify the delimiter used by your flat file in the awk statement..

May not be the case...ignore this

rubin · #5 (**permalink**) 05-09-2008

You need to use AWK's special way of passing variables into it:

Code:

echo "Enter month: "

read MONTH

awk -v mon="$MONTH"  '$3~mon { print $1, $2, $3, $4, $5, $6}' *.hits

Or equally:

Code:

awk '$3~mon { print $1, $2, $3, $4, $5, $6}'  mon="$MONTH" *.hits

Same thing if year is also needed:

Code:

awk -v mon="$MONTH" -v year="$YEAR" '$3~mon && $6~year { print ... } *.hits

amatuer_lee_3 · #6 (**permalink**) 05-09-2008

thanks very much.

can you use AWK to search for unique IP's within this?

so if the same IP logged on more than once it would list the one IP with all the hits?

I already have the IP's in a populated file with the month and date.

rubin · #7 (**permalink**) 05-09-2008

Simply modify the given code:

Code:

echo "Enter month: "

read MONTH

echo "Enter ip: "

read IP


awk -v mon="$MONTH" -v ip="$IP" '$3~mon && $1~ip { print ... }' *.hits

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Proxy ARP Difficulties	TheMaskedMan	IP Networking	7	11-02-2005 06:14 AM
Simple Network Program Difficulties	Mistwolf	High Level Programming	2	03-19-2002 02:34 AM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode