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lang-bash
/proc/devand users/homedirectories. This adds overhead. Whereashistoryis already being recorded and their connection information is known to the system connecting IP etc... This information if not already available "statically" could be set that way or stored in a variable or file and input to thehistoryrecords and the performance hit would be very small or 0.auditd. I'm not sure if its logs will give you enough information. The difficulty of what you want is precisely why shared accounts are so decried.auditdis a lot likeinotifyyou have to tell it what to monitor for changes. Individual files, directories, etc.. I don't want to go to that level of configuration. In fact (I do) but essentially don't care so much. I havepuppetto handle that stuff.auditdcomes with the additional load and time to setup as well. If an account is modifying something I still would like to look back in the history and see who or what is logging in and trying.PROMPT_COMMAND=just runs normal commands before the next prompt, couldn't you write a function calling sed/awk that works on the last line of the history file to add in the information. then call that function inPROMPT_COMMAND=to append the data? it would be hackish but should do the job.