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Grep for a string and then grep using a string from that result

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# 1  
Old 02-17-2011
Grep for a string and then grep using a string from that result
Hello,
Thanks in advance for the query.

There is a log file abcd.log which has multible line like this.

"hello1" , "hello2", "hello3" , "hello4" , "hello5"

I want to grep for the lines which has "hello4" & "hello5" and use "hello2" to grep the same log file again.
All these should happen on the fly.

Quote:
cat /web/abcd.log | grep $1 | grep $2
How do I grep using a string in the result I get here.
# 2  
Old 02-17-2011
Please show part of your input data and the desired output.
# 3  
Old 02-17-2011
This is my log file.

"hello1" , "hello2", "hello3" , "hello4" , "hello5"
"hello1" , "hello6", "hello7" , "hello8" , "hello9"
"hello1" , "hello12", "hello13" , "hello14" , "hello15"
"hello1" , "hello22", "hello23" , "hello24" , "hello25"

"hello2" & "hello3" are the string which I will know in advance before the log is generated.
My output should contain "hello1"

---------- Post updated at 04:25 PM ---------- Previous update was at 04:22 PM ----------

I actually figured it out.
Here it is.

Quote:
export sk=`cat /web/abcd.log | grep -P "hello2" | grep -P "hello3" | awk -F, '{print $1}'`
grep $sk /web/abcd.log
# 4  
Old 02-18-2011
Try this

awk '/hellox/ && /helloy/' <filename.txt> | awk '{ print $1 }'
# 5  
Old 02-18-2011
Quote:
Originally Posted by oky
Try this

awk '/hellox/ && /helloy/' <filename.txt> | awk '{ print $1 }'
why not put in one awk?

Code:
awk '/hellox/ && /helloy/ {print $1}' <filename.txt>

# 6  
Old 02-18-2011
ofcourse rdcwayx you are correct, i didn't noticed that ..thx for your input
# 7  
Old 02-18-2011
Quote:
awk '/hellox/ && /helloy/' <filename.txt> | awk '{ print $1 }'
Quote:
awk '/hellox/ && /helloy/ {print $1}' <filename.txt>
Both dint work .. Got this error
Quote:
awk: ^ syntax error
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