Why can I not kill a process in the same line I start it using fuser?












0















The goal is to start a process and close it in the same line, but I am having no luck.



I have been trying to kill a process by looking at the listening port and nothing seems to be working. The code is as follows:



(code to open port 8545) && fuser -k 8545/tcp



I also tried with kill -9 $(lsof -t -i:8545) and lsof -ti:8545 | xargs kill.



The line that did work was kill -9 $(lsof -i :8545 | awk '$8 == "TCP" { print $2 }'), which, afaik, is searching for the PID and killing that (as opposed to the TCP connection.



Why can I not kill it with fuser or the other methods mentioned?









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    0















    The goal is to start a process and close it in the same line, but I am having no luck.



    I have been trying to kill a process by looking at the listening port and nothing seems to be working. The code is as follows:



    (code to open port 8545) && fuser -k 8545/tcp



    I also tried with kill -9 $(lsof -t -i:8545) and lsof -ti:8545 | xargs kill.



    The line that did work was kill -9 $(lsof -i :8545 | awk '$8 == "TCP" { print $2 }'), which, afaik, is searching for the PID and killing that (as opposed to the TCP connection.



    Why can I not kill it with fuser or the other methods mentioned?









    share







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    python_crypto_questions is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      0








      The goal is to start a process and close it in the same line, but I am having no luck.



      I have been trying to kill a process by looking at the listening port and nothing seems to be working. The code is as follows:



      (code to open port 8545) && fuser -k 8545/tcp



      I also tried with kill -9 $(lsof -t -i:8545) and lsof -ti:8545 | xargs kill.



      The line that did work was kill -9 $(lsof -i :8545 | awk '$8 == "TCP" { print $2 }'), which, afaik, is searching for the PID and killing that (as opposed to the TCP connection.



      Why can I not kill it with fuser or the other methods mentioned?









      share







      New contributor




      python_crypto_questions is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      The goal is to start a process and close it in the same line, but I am having no luck.



      I have been trying to kill a process by looking at the listening port and nothing seems to be working. The code is as follows:



      (code to open port 8545) && fuser -k 8545/tcp



      I also tried with kill -9 $(lsof -t -i:8545) and lsof -ti:8545 | xargs kill.



      The line that did work was kill -9 $(lsof -i :8545 | awk '$8 == "TCP" { print $2 }'), which, afaik, is searching for the PID and killing that (as opposed to the TCP connection.



      Why can I not kill it with fuser or the other methods mentioned?







      kill tcp lsof fuser





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      asked 7 mins ago









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