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awk command-logging

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# 1  
Old 07-01-2009
awk command-logging
hi folks,

In the following code, logfile remains empty.
Code:
 
log_file="/u/Sc/prav.log.$mon$day"
 
ps -ef | grep "myprocess"| awk -v logfile=$log_file '{
 system("date >> logfile")
}'

can u please help as how to log the date to that logfile.
thanks in advance!
# 2  
Old 07-01-2009
For me your code generates a file with the name "logfile" in the current directory and prints the date there.
Are you initialising the variables "mon" and "day" somewhere?
# 3  
Old 07-01-2009
Quote:
Originally Posted by pravfraz
hi folks,

In the following code, logfile remains empty.
Code:
 
log_file="/u/Sc/prav.log.$mon$day"
 
ps -ef | grep "myprocess"| awk -v logfile=$log_file '{
 system("date >> logfile")
}'

can u please help as how to log the date to that logfile.
thanks in advance!
  1. why do you need awk? Cannot you use file redirection instead?
  2. If you do need awk, why do you need 'grep'? Awk can do it all.
  3. ps -ef | awk -v logfile="${log_file}" '/myprocess/{cmd="date >> " logfile; system(cmd); close(cmd)}"
# 4  
Old 07-02-2009
thanks a lot!!
i resolved it with your help!
forum rocks!!
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