套件：extrace（0.7-2 以及其他的）

trace exec() calls system-wide

extrace traces all program executions happening on a system, or the subset of program executions done by a given process and its descendants. For example, to see what the shell really executes:

$ sudo extrace -p $(pidof zsh) 8505 git rev-parse --is-inside-work-tree 8506 direnv export zsh 8511 git rev-parse --is-inside-work-tree

    8515 wc -l
  8516 whoami

8542 hostname 8543 git rev-parse --is-inside-work-tree 8544 direnv export zsh

  8549 /bin/bash --noprofile --norc -c 'eval "$("/usr/bin/direnv" stdlib)" >&2\
         && source_env ".envrc" >&2 && "/usr/bin/direnv" dump'
      8551 /usr/bin/direnv stdlib
      8558 /usr/bin/direnv watch .envrc
      8565 dirname .envrc
      8567 basename .envrc
      8569 basename .envrc
  8549 /usr/bin/direnv dump

8574 git rev-parse --is-inside-work-tree

    8578 wc -l
  8579 whoami

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