【Linux基础】某些Linux系统在最小化安装后命令无法自动补全

解决办法（以Centos 9 Stream为例）：

如果您在CentOS 9上无法自动补全命令，您可以尝试以下步骤：

1. 检查bash-completion软件包是否已安装。如果未安装，请使用以下命令安装：

sudo dnf install bash-completion

2. 确保您的.bashrc文件中包含以下行（如果没有就复制粘贴进去）：

if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

修改完之后的.bashrc内容：

[root@M001 ~]# cat .bashrc    
# .bashrc

# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi

# User specific environment
if ! [[ "$PATH" =~ "$HOME/.local/bin:$HOME/bin:" ]]
then
    PATH="$HOME/.local/bin:$HOME/bin:$PATH"
fi
export PATH

# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=

# User specific aliases and functions
 
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

############################就像这样############################
# Command auto completion --xiamingliang
# The prerequisite is to install the bash-completion
if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi
###############################################################

[root@M001 ~]# 

3. 使用以下命令将其添加到.bashrc文件中：

source ~/.bashrc

如果您仍然无法自动补全命令，尝试重启计算机并重新尝试上述步骤。