什么是core文件程序员
程序崩溃时保留现场,将内存信息映射到core文件中,便于程序员进行调试app
查看core文件存储地址以及命名规则ui
# cat /proc/sys/kernel/core_pattern
/home/coresave/bak/core.%e.%p.%tunix
%p - insert pid into filename 添加pid
%u - insert current uid into filename 添加当前uid
%g - insert current gid into filename 添加当前gid
%s - insert signal that caused the coredump into the filename 添加致使产生core的信号
%t - insert UNIX time that the coredump occurred into filename 添加core文件生成时的unix时间
%h - insert hostname where the coredump happened into filename 添加主机名
%e - insert coredumping executable name into filename 添加命令名调试
core文件生成大小限制内存
查看当前core文件大小限制it
# ulimit -c
unlimitedtable
ulimit -cfilesizesed
ulimit -cunlimitedfile