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发表于 2009-12-15 17:43:26
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man bash
- If a command is terminated by the control operator &, the shell exe‐
- cutes the command in the background in a subshell. The shell does not
- wait for the command to finish, and the return status is 0. Commands
- separated by a ; are executed sequentially; the shell waits for each
- command to terminate in turn. The return status is the exit status of
- the last command executed.
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