For me, C-r is sufficient (and/or M-r in Emacs, where C-r by default does reverse interactive search on the text in buffer; it's nice to have both at the same time, actually). However, I must have skipped some education about shell history and/or its default settings, because half the time I need it, the command I want isn't there to be found. I also observed the following kinds of behaviors:
- Sometimes, shell history seems to be scoped (or reacting to) current working directory;
- Sometimes, commands executed on remote machines end up being saved in local history;
- When the shell gets killed (e.g. when Emacs crashes and takes down the shells open inside with it), or the system crashes, sometimes the history gets saved, and sometimes nothing remains from a session that spanned multiple days;
- When I have multiple terminals open, it's a coin toss whether only one will have history saved or all of them, and then another toss as to whether histories will be CWD-sensitive or not.
Is there a good primer/community consensus on how to configure shell so all history gets saved in sensible manner (including continuously, so it survives a crash)?