add:添加linux抓取dump文件
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								cpp/linuxdump.txt
									
									
									
									
									
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					cpp程序在Linux下生成dump文件。
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					1.编辑:/etc/sysctl.d/99-core-dump.conf (99是优先级规则)
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					2.应用:sudo sysctl -p /etc/sysctl.d/99-core-dump.conf
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					临时应用:sudo sysctl -w kernel.core_pattern=/tmp/coredump/core.%e.%p.%t
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					3.sudo mkdir -p /tmp/coredump
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					4.gdb /home/xx/a.out /tmp/coredump/core.a.out.13112.1738999997
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					5.使用bt(用于显示程序崩溃或暂停时的调用堆栈(Backtrace))查看。
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