如何保持bash历史？

我不知道这是否可以预期，但是我的历史记录并未在所有会话中保存。这就是说，如果我关闭窗口，那么当我再次打开它时，历史记录为空。如何在整个会话中坚持下去？

这是您要求的命令的输出：

 set -o | grep history
history         on

$ grep -i history ~/.bashrc ~/.bash_profile ~/etc/bash.bashrc ~/etc/profile ~/.profile
/cygdrive/c/cygwin/home/car/.bashrc:# Make bash append rather than overwrite the history on disk
/cygdrive/c/cygwin/home/car/.bashrc:# History Options
/cygdrive/c/cygwin/home/car/.bashrc:# Don't put duplicate lines in the history.
/cygdrive/c/cygwin/home/car/.bashrc:# export PROMPT_COMMAND="history -a"
grep: /cygdrive/c/cygwin/home/car/etc/bash.bashrc: No such file or directory
grep: /cygdrive/c/cygwin/home/car/etc/profile: No such file or directory
/cygdrive/c/cygwin/home/car/.profile:if [ "x$HISTFILE" == "x/.bash_history" ]; then
/cygdrive/c/cygwin/home/car/.profile:  HISTFILE=$HOME/.bash_history

$ ls -la ~/ | grep history -> no output

$ echo $HISTFILE 
~/.bash_history
$ echo $HISTSIZE
500
$ echo $HISTFILESIZE 
500

在下面的答案中描述的编辑之后，我现在得到：

grep -i hist .bashrc
# Make bash append rather than overwrite the history on disk
shopt -s histappend
# History Options
# Don't put duplicate lines in the history.
export HISTCONTROL="ignoredups"
# (added) A new shell gets the history lines from all previous shells
PROMPT_COMMAND='history -a'
# HISTIGNORE is a colon-delimited list of patterns which should be excluded.

我仍然无法跨会话保存历史记录。我阅读了以下问题：

• 使用histappend时Bash历史记录丢失
• 如何防止Bash更改历史记录？
• 什么决定了bash history命令中显示的内容？
• 如何在各个会话之间保持bash历史记录？
• 定期保存bash历史记录

似乎没有人解决我的问题，包括下面那个人的回答，那个人的问题从所谓的副本中得到了回答。

好吧，看来您~/.bashrc没有必要的选择。确保这些行在您的~/.bashrc：

# Make Bash append rather than overwrite the history on disk:
shopt -s histappend
# A new shell gets the history lines from all previous shells
PROMPT_COMMAND='history -a'
# Don't put duplicate lines in the history.
export HISTCONTROL=ignoredups

好，我发现了问题所在。我无法关闭窗口，必须键入“退出”才能正常关闭。