The format of the trap command is.
trap命令的格式为。
To catch a signal that is sent to your process, use the built-in trap command.
要捕捉发送到您的进程的信号，请使用内置的trap命令。
The first is the return status from a command, and the second is the trap command within your shell.
第一个是命令的返回状态，第二个是外壳中的trap命令。
The first is the return status from a command, and the second is the trap command within your shell.
第一个是命令的返回状态，第二个是外壳中的trap命令。
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