[2]+ Done... 是什么意思？

sophistcxf

当在后台执行的程序结束时，会提示诸如
[2]+ Done  ...
[3]- Done ...
[4] Done ...
请问这里+,-,或者空分别代表什么意思？

井蛙夏虫

man bash的JOB CONTROL段:

1. In output pertaining to jobs (e.g., the output of the jobs command), the current job is always flagged with a +,  and  the  previous  job with a -.  A single % (with no accompanying job specification) also refers to the current job.

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current job的解释:

1. the current job, which is the last job stopped while it was in the foreground or started in the background.

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