从 bash 脚本检查 vim 版本和 python 支持

Sub*_*ash 2 vim bash

我有一个 bash 脚本,它依赖vim于至少版本7.4并与 python 一起安装。我需要检查上述条件是否匹配,如果不匹配则退出并要求用户更新他们的 vim。

到目前为止,我能想到的就是下面的内容

has_vim = command -v vim >/dev/null  

if ! $has_vim; then
  echo "must have vim installed."
  exit 1
fi

// Here I want do as the following pseudo code
vim_info = $(vim --version | grep python)

// suggest me if there is another way
vim_version = // find version info from $vim_info
has_python_support = // find python support from $vim_info

if ! $vim_version >= 7.4 && ! has_python_support; then
  echo "vim version must be at least 7.4 and must be installed with python support"
fi

// everything is ok. carry on
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目前我能想到的就是检查$vim_info预期的 vim 版本和 python 支持。

将问题归结为有意义的句子:

如何检查 vim 版本是否大于或等于 7.4 并且是否有来自 bash 脚本的 python 支持?

eck*_*kes 5

当我问我的 vim 时vim --version,它会吐出这样的东西:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Sep 16 2015 08:44:57)
Included patches: 1-872
Compiled by <alexpux@gmail.com>
Huge version without GUI.  Features included (+) or not (-):
+acl             +farsi           +mouse_netterm   +syntax
+arabic          +file_in_path    +mouse_sgr       +tag_binary
+autocmd         +find_in_path    -mouse_sysmouse  +tag_old_static
-balloon_eval    +float           +mouse_urxvt     -tag_any_white
-browse          +folding         +mouse_xterm     -tcl
++builtin_terms  -footer          +multi_byte      +terminfo
+byte_offset     +fork()          +multi_lang      +termresponse
+cindent         +gettext         -mzscheme        +textobjects
-clientserver    -hangul_input    +netbeans_intg   +title
+clipboard       +iconv           +path_extra      -toolbar
+cmdline_compl   +insert_expand   +perl/dyn        +user_commands
+cmdline_hist    +jumplist        +persistent_undo +vertsplit
+cmdline_info    +keymap          +postscript      +virtualedit
+comments        +langmap         +printer         +visual
+conceal         +libcall         +profile         +visualextra
+cryptv          +linebreak       +python/dyn      +viminfo
+cscope          +lispindent      +python3/dyn     +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con      -lua             +rightleft       +windows
+diff            +menu            +ruby/dyn        +writebackup
+digraphs        +mksession       +scrollbind      -X11
-dnd             +modify_fname    +signs           -xfontset
-ebcdic          +mouse           +smartindent     -xim
+emacs_tags      -mouseshape      -sniff           -xsmp
+eval            +mouse_dec       +startuptime     -xterm_clipboard
+ex_extra        -mouse_gpm       +statusline      -xterm_save
+extra_search    -mouse_jsbterm   -sun_workshop    -xpm
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因此,在这里解析输出将是一个不错的选择。

找到版本号并将其存储在VIMVERSION

VIMVERSION=$(vim --version | head -1 | cut -d ' ' -f 5)
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从这里开始,检查在 bash shell 脚本中如何将字符串转换为数字,以了解如何将字符串结果与您需要的最小值进行比较7.4

检查 Python 支持(如果 Python 不可用,HAS_PYTHON将检查0):

HAS_PYTHON=$(vim --version | grep -c '+python')
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明确检查 Python 3(如果 Python 3 不可用,HAS_PYTHON3则再次检查0):

HAS_PYTHON3=$(vim --version | grep -c '+python3')
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这可能有点粗糙,但我想你明白了。