为什么Vim编辑.vimrc后不显示数字行

Question

我已经编辑了.vimrc文件，使其包含以下行：

set number

我已经保存了文件并完全关闭了vim，重新打开文件时仍然没有行号。

这是位于/ usr / share / vim / vimrc的整个文件

" Configuration file for vim
set modelines=0     " CVE-2007-2438

" Normally we use vim-extensions. If you want true vi-compatibility
" remove change the following statements
set nocompatible    " Use Vim defaults instead of 100% vi compatibility
set backspace=2     " more powerful backspacing

" Don't write backup file if vim is being called by "crontab -e"
au BufWrite /private/tmp/crontab.* set nowritebackup
" Don't write backup file if vim is being called by "chpass"
au BufWrite /private/etc/pw.* set nowritebackup

set number

Answer 1

编辑vimrc文件（系统默认文件之一或主目录中的文件）后，应使用source命令，如下所示读入文件并使这些配置在当前会话中有效。

:source ~/.vimrc

要么

:source  /usr/share/vim/vimrc