我正在尝试在 Linux 机器上编写一个 bash 脚本来计算行数并在 处停止Firmware state: Rebuild，然后获取该行号（例如 15 -1 = 14，因为行号 0 是第一行）并将其保存在一个变量中。我不知道如何做到这一点，所以寻求帮助。
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun …bash ×1