Date: 2017dec19 OS: Linux Q. Linux: How can a Linux program find out info about itself ? A. The folder

/proc/self

Contains all sorts of juicy details about the current process. For example

ls /proc/self

Might list

arch_status coredump_filter gid_map maps oom_adj sched statm wchan attr cpu_resctrl_groups io mem oom_score schedstat status autogroup cpuset ksm_merging_pages mountinfo oom_score_adj sessionid syscall auxv cwd ksm_stat mounts pagemap setgroups task cgroup environ latency mountstats patch_state smaps timens_offsets clear_refs exe limits net personality smaps_rollup timers cmdline fd loginuid ns projid_map stack timerslack_ns comm fdinfo map_files numa_maps root stat uid_map

You can drill into each of those. You can not simply `cat /proc/self/mem` Here how to do that: https://serverfault.com/questions/173999/dump-a-linux-processs-memory-to-file