update head.md

2018-09-01 23:10:32 +08:00 · 2018-09-01 23:10:32 +08:00 · da1a4fc6fe
commit da1a4fc6fe
parent 8558c2dc93
1 changed files with 2 additions and 0 deletions
--- a/help.md
+++ b/help.md
@ -296,6 +296,8 @@
 | `:%s/$/test/`        | 在行尾加入特定字符(也可以用宏录制来添加)         |
 | `:sort`              | 排序                                             |
 | `:g/^\(.\+\)$\n\1/d` | 去除重复行(先排序)                               |
+| `:%s/^.\{10\}//`     | 删除每行前10个字符                               |
+| `:%s/.\{10\}$//`     | 删除每行尾10个字符                               |


 ## 帮助