我在.bashrc中写了一些行来完成以下操作：
将每个命令后的每个会话保存到文件中。您将创建与终端一样多的历史文件。从最近的历史文件开始启动新终端时，将先前会话中的所有历史文件加载到历史缓冲区，直到达到行计数阈值。
HISTCONTROL=''
HISTFOLDER=~/.bash_histories
HISTFILEEXT=history # only files in $HISTFOLDER with this extension will be read
shopt -s histappend # append when closing session
mkdir -p $HISTFOLDER
HISTFILE=$HISTFOLDER/$(date +%Y-%m-%d_%H-%M-%S_%N).$HISTFILEEXT # create unique file name for this session. Nanoseconds seems to be unique enough, try: for ((i=0; i<=10; i++)); do date +%Y-%m-%d_%H-%M-%S_%N; done
# if HISTFILE unset, history is not saved on exit -> not really necessary if we save after each command, but its a double net safety
HISTSIZE=-1 # maximum number of commands to hold inside bash history buffer
HISTFILESIZE=-1 # maximum number of lines in history file
# history -a $HISTFILE # bash saves the total history commands entered since startup or since the last save and saves that amount of commands to the file. This means reading a history file after typing commands will trip up bash, but this won't be a problem if the history file is only loaded in the beginning. This means that only new commands are saved not all the old loaded commands, thereby we can load as many history files into the buffer as we want and still only save newly thereafter typed commands
PROMPT_COMMAND="history -a $HISTFILE; $PROMPT_COMMAND" # This command is executed after very typed command -> save history after each command instead after only closing the session
# Load old histories from last 5 files/sessions
HISTLINESTOLOAD=2000
# --reverse lists newest files at first
names=($(ls --reverse $HISTFOLDER/*.$HISTFILEEXT 2>/dev/null))
toload=()
linecount=0
# Check if is really file and count lines and only append to $toload if linecount under $HISTLINESTOLOAD
for fname in ${names[*]}; do
if test -f $fname; then
linecount=$((linecount+$(wc -l < $fname) ))
if test $linecount -ge $HISTLINESTOLOAD; then
break
fi
toload+=($fname)
fi
done
# Beginning with the oldest load files in $toload into bash history buffer
for (( i=${#toload[*]}-1; i>=0; i-- )); do
history -r ${toload[$i]}
done