niveum/packages/fkill.nix

{
  writers,
  lib,
  procps,
  gawk,
  gnused,
  fzf,
}:
writers.writeBashBin "fkill" ''
  PATH=$PATH:${
    lib.makeBinPath [
      procps
      gawk
      gnused
      fzf
    ]
  }

  if [ "$UID" != "0" ]; then
      pid=$(ps -f -u "$UID" | sed 1d | fzf -m | awk '{print $2}')
  else
      pid=$(ps -ef | sed 1d | fzf -m | awk '{print $2}')
  fi

  if [ "x$pid" != "x" ]
  then
      echo "$pid" | xargs kill "-''${1:-9}"
  fi
''