send mail immediately when output arrives in a file

[zxcv]

Hi  guys ,

i have the following awk script which gives me o/p as desired ,

awk  '
/Start of shutcons/, /End of CI0251/ {
   if ($2 == "End" && $3 == "of" && $NF != 0) {
      # if RC != 0, print stop line
      print "job", $4, $(NF-2), "=", $NF
   }
} ' abc.log > failures.log

if [ -s failures.log ]; then

   mailx -s "subject" zxcv@company.example < failures.log

fi

rm -f failures.log

it fills failures.log with RC codes !=0 when shutcon job is started and before CI0251 job.

Now my problem is i want to fire a mail immediately when line number 1 gets o/p say for ex:

job xyz RC=12  ( it must send me a mail )

Afetr 2 min whan another line comes say for ex:

job tes RC=64 ( it must send me a mail )

Note here i shuld be getting 2 different mails with a single line only.

i.e it must flush earlier mailed line.

abc.log file is getting  updated throughout day.

[Dennis Handly]

There are several ways to do this.

You could redirect awk's stdout to a named pipe.  Then have another script read the pipe and send mail for each line.

(Or you could have coprocesses instead of that named pipe.)

Or you could replace that print by a open-print-close to a file.  And then invoke the system function to mail that file.

[Dennis Handly]

>Or you could replace that print by a open-print-close to a file.  ...

Actually it is simpler than that:

awk  '

BEGIN { mail_it = "mailx -s \"subject\" zxcv@company.example" }
/Start of shutcons/, /End of CI0251/ {
   if ($2 == "End" && $3 == "of" && $NF != 0) {
      # if RC != 0, print stop line
      print "job", $4, $(NF-2), "=", $NF | mail_it

      close(mail_it)
   }
}' abc.log

[Dennis Handly · Accepted solution]

>abc.log file is getting updated throughout day.

I assume you know you still need to use something like Laurent's solution in your other topic:

http://h30499.www3.hp.com/t5/Languages-and-Scripting/Initiate-a-script-for-a-pattern-grepped-in-a-file/m-p/5833257

[zxcv]

Thanks a ton