awk : actively tail a file & email when criteria is met

[Loïc Grenié]

2009/4/22 Evuraan::ഏവൂരാന്‍ <evuraan at gmail.com>:
> 2009/4/22 Loïc Grenié <loic.grenie at gmail.com>:
>> 2009/4/22 Evuraan::ഏവൂരാന്‍ <evuraan at gmail.com>:
>>> Greetings..!
>>>
>>> this below works:
>>>
>>> tail -f /var/log/apache2/access.log | \
>>> nawk '/192.168.1.100/{ print $0 }'
>>>
>>> and this too:
>>>
>>>  tail -f /var/log/apache2/access.log | \
>>> awk ' /192.168.1.100/ { system ("mail -s \"This works\" me at email.address")}'
>>>
>>> but this below, does not work:
>>>
>>>  tail -f /var/log/apache2/access.log | \
>>> awk ' /192.168.1.100/ {  print $0 | "mail me at email.address  "}'
>>>
>>> I tried nawk,gawk etc. still no go.
>>
>>    The line above is missing a "system()" :
>>
>> tail -f /var/log/apache2/access.log | \
>> awk ' /192.168.1.100/ {  print $0 | system("mail me at email.address  "); }'
>>
> thanks for the reply,  but thats does not quite help though.
>
> nothing happens until i send a ctrl-c, and then it says,
> sh: 0: not found

     Yeah, sorry: I should have checked before replying...

>>    Does it solve your problem ? Otherwise, could you specify exactly
>>  what is your problem ? (Command does not start, e-mail received
>>  is incorrect, etc...)
>
> the emails I recieved does not have txt that shud be the $0 of awk.

    Here it seems to work, however the mail is sent only when the input
  is closed (not one per line). Maybe that's your problem...

       Hope this helps,

              Loïc