hi ,
if i use awk command without watch its fine
but if u use watch with awk it dont work
here is a an example :
watch --interval=5 "awk 'match($0,/http:\/\/[^/]+\//){_[substr($0,RSTART,RLENGTH)]=1}END{for (i in _) print i}' /home/p2"

im monitoring file /home/p2 ................ if i use :
"awk 'match($0,/http:\/\/[^/]+\//){_[substr($0,RSTART,RLENGTH)]=1}END{for (i in _) print i}' /home/p2"

it give me the output in the file , but i want to see the output of the file every 5 seconds by using watch command

i noted the problem in watch command , i saw the the command is changed :
here wt i mean
when i run the command
"awk 'match($0,/http:\/\/[^/]+\//){_[substr($0,RSTART,RLENGTH)]=1}END{for (i in _) print i}' /home/p2"

i see the screen
Every 5.0s: awk 'match(-su,/http:\/\/[^/]+\//){_[substr(-su,RSTART,RLENGTH)]=1}END{for (i in _) print i}' /home/p2


as u see above the $0 was changed with "-su" , i think this is the reason of my trouble

with to solve it

regards

From 'man watch'
and from the Examples section of 'man watch'
It might be informative to try your example, and then inspect the output from 'ps ax' in another terminal while the example is running.