sh: /usr/local/bin/pod: bad interpreter: /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/

报错信息如下

zsh: /usr/local/bin/pod: bad interpreter: /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby: no such file or directory

尝试升级cocoapods解决,升级步骤如下

• 更新gem,需要强制安装指定目录

$sudo gem update -n /usr/local/bin --system
#下边可忽略，不确定是有意义，因为我之前用brew安装来一下ruby，还更新一下gem源，不知是否有影响
$brew install ruby
$gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/

否则报错

ERROR: While executing gem ... (Errno::EROFS)
Read-only file system @ rb_sysopen - /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/gem

• 升级cocoapods

$xcode-select --install #1
$sudo gem install -n /usr/local/bin cocoapods --pre #2

不执行1，可能出现的报错

Building native extensions. This could take a while...
ERROR:  Error installing cocoapods:
	ERROR: Failed to build gem native extension.

    current directory: /Library/Ruby/Gems/2.6.0/gems/ffi-1.13.1/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20201119-9529-1x5y20r.rb extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/include/ruby.h

You might have to install separate package for the ruby development
environment, ruby-dev or ruby-devel for example.

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.6.0/gems/ffi-1.13.1 for inspection.
Results logged to /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-20/2.6.0/ffi-1.13.1/gem_make.out

不执行2中，指定目录**-n /usr/local/bin cocoapods**时，可能出现的报错

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /usr/bin directory.

• 更新仓库

pod repo update

问题解决