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iconv
===
转换文件的编码方式
## 补充说明
**iconv命令** 是用来转换文件的编码方式的比如它可以将UTF8编码的转换成GB18030的编码反过来也行。JDK中也提供了类似的工具native2ascii。Linux下的iconv开发库包括iconv_open,iconv_close,iconv等C函数可以用来在C/C++程序中很方便的转换字符编码这在抓取网页的程序中很有用处而iconv命令在调试此类程序时用得着。
### 语法
```
iconv -f encoding [-t encoding] [inputfile]...
```
### 选项
```
-f encoding :把字符从encoding编码开始转换。
-t encoding :把字符转换到encoding编码。
-l :列出已知的编码字符集合
-o file :指定输出文件
-c :忽略输出的非法字符
-s :禁止警告信息,但不是错误信息
--verbose :显示进度信息
-f和-t所能指定的合法字符在-l选项的命令里面都列出来了。
```
### 实例
列出当前支持的字符编码: 
```
iconv -l
```
将文件file1转码转后文件输出到fil2中 
```
iconv file1 -f EUC-JP-MS -t UTF-8 -o file2
```
这里,没`-o`那么会输出到标准输出。
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