DRBL的client上執行R出現錯誤

在DRBL的client上面執行R，出現了下面的錯誤訊息：

Error : .onLoad failed in loadNamespace() for 'utils', details:
  call: options(op.utils[toset])
  error: invalid value for 'editor'
In addition: Warning message:
package "methods" in options("defaultPackages") was not found 
Error : .onLoad failed in loadNamespace() for 'utils', details:
  call: options(op.utils[toset])
  error: invalid value for 'editor'
In addition: Warning message:
package 'utils' in options("defaultPackages") was not found 
Error : .onLoad failed in loadNamespace() for 'utils', details:
  call: options(op.utils[toset])
  error: invalid value for 'editor'
In addition: Warning message:
package 'stats' in options("defaultPackages") was not found 
During startup - Warning messages:
1: package 'methods' in options("defaultPackages") was not found 
2: Setting LC_CTYPE failed, using "C" 

這是因為DRBL client上的/etc/R/Renviron這個檔案不存在。起因是R的安裝在《DRBL企鵝龍重新佈署》drblpush之後，故/etc/R這個資料夾沒有被複制到 /tftproot/nodes/Private_IP/etc 下面，造成DRBL client上沒有/etc/R/Renviron。參考《R install 2.15.2 Renvirons not found, Ubuntu 12.10 x64》一文

除了重新部署DRBL以外，也可以用下面的指令手動將/etc/R/Renviron放到/tftproot/nodes/Private_IP/etc，用root權限依序執行指令：

1. cd /etc
2. for i in 192.168.9.{204..234}; do cp -r R /tftpboot/nodes/${i}/etc/; done

_EOF_