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When a RedHat Linux Server hangs and rebooted, how can I generate a core of manual invocation by sysreq key but we need system to generate crashdump if 10.20 How to Produce a Core File from Your Program · generate-core-file [ file ]; gcore [ file ] · Produce a core dump of the inferior process. The optional Generate core dumps of one or more running programs with process IDs pid1, pid2, etc. A core file produced by gcore is equivalent to one produced by the kernel