在 bash 中运行命令而不保存在历史记录中

Question

如何在 bash 中运行命令而不将其保存在历史记录中？

Answer 1

在命令前添加空格。以空格开头的命令不会写入历史记录：

root@ubuntu-1010-server-01:~# echo foo
foo
root@ubuntu-1010-server-01:~# history 
    1  echo foo
    2  history 
root@ubuntu-1010-server-01:~#  echo bar
bar
root@ubuntu-1010-server-01:~# history 
    1  echo foo
    2  history 

男人 bash

  HISTCONTROL
         A  colon-separated  list of values controlling how commands are
         saved on the history list.  If  the  list  of  values  includes
         ignorespace,  lines  which begin with a space character are not
         saved in the history list.  A value of ignoredups causes  lines
         matching  the  previous history entry to not be saved.  A value
         of ignoreboth is shorthand for ignorespace and  ignoredups.   A
         value  of erasedups causes all previous lines matching the cur?
         rent line to be removed from the history list before that  line
         is  saved.   Any  value  not  in the above list is ignored.  If
         HISTCONTROL is unset, or does not include a  valid  value,  all
         lines  read  by the shell parser are saved on the history list,
         subject to the value of HISTIGNORE.  The second and  subsequent
         lines  of a multi-line compound command are not tested, and are
         added to the history regardless of the value of HISTCONTROL.