如果您的手指默认使用CTRL-A CTRL-C，那么尝试从$VIMRUNTIME/mswin.vim映射。

" CTRL-C and CTRL-Insert are Copy
vnoremap <C-C> "+y

" CTRL-A is Select all
noremap <C-A> gggH<C-O>G
inoremap <C-A> <C-O>gg<C-O>gH<C-O>G
cnoremap <C-A> <C-C>gggH<C-O>G
onoremap <C-A> <C-C>gggH<C-O>G
snoremap <C-A> <C-C>gggH<C-O>G
xnoremap <C-A> <C-C>ggVG

我将它们映射到<Leader><C-a>和<Leader><C-c>。

如果你在使用VI时遇到问题，另一种简单的复制整个文件的方法就是输入“cat filename”。它会将文件回显到屏幕上，然后你可以上下滚动并复制/粘贴。

虽然上面的许多答案都很出色，但没有一个解决方案适合我，因为我使用的是Ubuntu 16.04附带的默认VIM安装，并且默认没有安装剪贴板选项。我还想把文本粘贴到一个外部程序中。

解决方案:Ubuntu的默认终端允许你通过点击编辑然后全选来高亮显示全部内容。

gVim:

:set go=a

ggVG

看:help go-a:

'a' Autoselect:  If present, then whenever VISUAL mode is started,
 or the Visual area extended, Vim tries to become the owner of
 the windowing system's global selection.  This means that the
 Visually highlighted text is available for pasting into other
 applications as well as into Vim itself.  When the Visual mode
 ends, possibly due to an operation on the text, or when an
 application wants to paste the selection, the highlighted text
 is automatically yanked into the "* selection register.
 Thus the selection is still available for pasting into other
 applications after the VISUAL mode has ended.
     If not present, then Vim won't become the owner of the
 windowing system's global selection unless explicitly told to
 by a yank or delete operation for the "* register.
 The same applies to the modeless selection.

如果您的手指默认使用CTRL-A CTRL-C，那么尝试从$VIMRUNTIME/mswin.vim映射。

" CTRL-C and CTRL-Insert are Copy
vnoremap <C-C> "+y

" CTRL-A is Select all
noremap <C-A> gggH<C-O>G
inoremap <C-A> <C-O>gg<C-O>gH<C-O>G
cnoremap <C-A> <C-C>gggH<C-O>G
onoremap <C-A> <C-C>gggH<C-O>G
snoremap <C-A> <C-C>gggH<C-O>G
xnoremap <C-A> <C-C>ggVG

我将它们映射到<Leader><C-a>和<Leader><C-c>。

我在我的.vimrc中添加了以下一行

nnoremap <F5> :%y+<CR>

这允许我通过按F5(在命令模式下)将Vim中的所有文本复制到剪贴板。