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  • 3
    This is most reliable way to control tunnel life time if you'd asked me. Thanks indeed Commented Sep 12, 2019 at 14:14
  • This is a far better solution than grepping and parsing ps output. Commented Sep 17, 2019 at 22:22
  • 3
    +1, much more reliable than the ps-based solution. the "exit" command removes the need for a PID to kill the process, but I took the liberty of editing in a mention of the "check" command, which also answers the question of "how do I get the PID?" as it was initially asked. Commented Oct 3, 2019 at 9:32
  • This is fantastic. Saved me from writing PID management in bash Commented Feb 20, 2020 at 19:14
  • 1
    Okay… different from what I asked but more useable really. I like it. Commented Feb 11, 2021 at 2:33