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工作学习 / 学科技术讨论 / Can someone explained a little bit more about "echo $!"? google doesn't return much I guess becoz the special character. THX a lot
-bentley(小兔);
2008-10-23
(#4788088@0)
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这个很少用啊： $! holds the PID of the last command that was executed in the background.
-647i(though);
2008-10-23
{1549}
(#4788090@0)
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THX. I saw this used in a script to keep some PID run as &. I won't use the script but it's nice to know this :-)
-bentley(小兔);
2008-10-23
(#4789064@0)