Vim'='不起作用（CentOS 6）

Question

When i try gg=G or something like that i get error:

:.,$!indent
shell returned 127
4 lines filtered
Press ENTER or type command to continue

On my Fedora destop it works fine. What's wrong?

config:

set autoindent
set tabstop=4
set shiftwidth=4
set number
set smartindent 
set showmatch

Answer 1

You can unset equalprg option:

set ep=

When ep is empty, vim will use the internal formatting function.

Answer 2

您没有安装缩进工具。

yum install indent