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m5r/destroyByPort.sh

Created February 21, 2018 11:15
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  1. m5r created this gist Feb 21, 2018.
    21 changes: 21 additions & 0 deletions destroyByPort.sh
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,21 @@
    #!/bin/bash
    if [ -z "$1" ]; then
    echo "Error: No argument passed" >&2; exit 1
    fi

    if ! [[ $1 =~ ^[0-9]+$ ]] ; then
    echo "Error: Argument is not a number" >&2; exit 1
    fi

    PIDToKill=$(lsof -i:$1 | grep LISTEN | awk '{print $2}' | uniq)

    if [ -z "$PIDToKill" ]; then
    echo "Error: No process listening on port ${1} found" >&2; exit 1
    fi

    {
    kill -9 $PIDToKill
    echo "Successfully killed process with PID ${PIDToKill} listening on port ${1}"; exit 1
    } || {
    echo "Error: unknown error when tried to kill process ${PIDToKill}" >&2; exit 1
    }