linux vim出现Swap file "xxx.swp" already exists![O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort
解决方法：
Swap file ".xuanhuan.sh.swp" already exists!
[O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort
上次vim没保存退出导致的，按D键删除即可。