The string of commands contains a flaw, because for the awks FS is not set prior to reading the input (but while on line 1), the field splitting will only be in effect on line 2 and further (and line 3 by the time we get tot the last awk...and the first results will not be printed)

So FS needs to be set beforehand, plus we could combine that grep and all of the awks into one:

Code:

lsof -i -p 9402 | awk -F':|->' '$2==9402{print $3}'

The awk can be changed so that occurrences can be counted like so:

Code:

awk -F':|->' '$2==9402{A[$3]++} END{for(i in A)print i,A[i]}' OFS='\t'