Multiple bash Log in history write issue

Question: If a user is opening several bash interfaces at the same time, which Bash's history command record will be written in ~/.bash_history?

A: All bash has its own histsize pen recorded in memory, because the log file will not be updated until the logoff, so the last bash will be last written, and the other bash commands will not be recorded because the last bash was overwritten with the update.
Because of the multiple login has such a problem, so many users are accustomed to single bash login, and then use the job control to switch between different jobs, so that all the commands have been issued to record, it is convenient for the system administrator to debug the instructions later.

=-=-=-=-=
Powered by Blogilo

Multiple bash Log in history write issue