string comparisons

ricmon · 06-11-2007, 03:00 PM

Quote:

Originally Posted by druuna

Hi,

No, it will go into lsof_checks.txt if it is actually found, if nothing is found an empty line is printed in no_lsof_checks.txt.

The program will only end up in the 'no listener' section if nothing is found (lsof -i:7001 | grep LISTEN has no output), if the output matches the string you will end up in the listener found section.

Take another look at post #11, I put some comments in them.

Maybe I'm missing something. The lsof command should produce output at least similar to the literal:

listening="java 6045 firstgov 31u IPv4 0x30011c80de0 0t0 TCP s262789dc3su12.ushrnd2.savvis.net:7001 (LISTEN)"

because the deamon is in fact listening on port 7001.

actual out put from server:

$ lsof -i:7001 | grep LISTEN
java 6045 firstgov 31u IPv4 0x30011c80de0 0t0 TCP s262789dc3su12.ushrnd2.savvis.net:7001 (LISTEN)

druuna · 06-11-2007, 03:27 PM

Hi,

It must be the listening string, it must be different then the actual output.

Try this from the command line to see if the string you are looking for exists:

ssh -T rmccown@10.35.25.50 "lsof -i:7001"

This should be done from where the script is run, not on 10.35.25.50.

If no output is found, try without the :7001 part and change 7001 accordingly.
If that generates output try:

ssh -T rmccown@10.35.25.50 "lsof -i:7001 | grep LISTEN"

If this doesn't generate output, change LISTEN to the appropriate token.
If that generates output copy-paste that output in your script (the 'listening=".........' line).

Hope this helps.

ricmon · 06-12-2007, 10:04 AM

Quote:

Originally Posted by druuna

Hi,

It must be the listening string, it must be different then the actual output.

Try this from the command line to see if the string you are looking for exists:

ssh -T rmccown@10.35.25.50 "lsof -i:7001"

This should be done from where the script is run, not on 10.35.25.50.

If no output is found, try without the :7001 part and change 7001 accordingly.
If that generates output try:

ssh -T rmccown@10.35.25.50 "lsof -i:7001 | grep LISTEN"

If this doesn't generate output, change LISTEN to the appropriate token.
If that generates output copy-paste that output in your script (the 'listening=".........' line).

Hope this helps.

I am certain that the lsof check is producing the desired output as noted in post #16. The literal for the string comparison is in fact the output from the lsof command as it apperas in the script.

druuna · 06-12-2007, 10:31 AM

Hi,

Ok, last try.

Could you post your script and the output of ssh -T rmccown@10.35.25.50 "lsof -i:7001 | grep LISTEN".

And put code tags around them (code tags howto), this saves the layout (spaces and tabs, among other things).