Merge pull request #530 from joelhy/enca-page

add enca to common page

pages/common/enca.md

@@ -0,0 +1,19 @@
+# enca
+
+> Detect and convert encoding of text files
+
+- detect file(s) encoding according to your system's locale
+
+`enca {{file(s)}}`
+
+- detect file(s) encoding; -L option tells enca the current language; language is in the POSIX/C locale format, e.g. zh_CN, en_US etc.
+
+`enca -L {{language}} {{file(s)}}`
+
+- convert file(s) to specified encoding
+
+`enca -L {{language}} -x {{to_encoding}} {{file(s)}}`
+
+- save original_file as new_file and convert new_file to specified encoding
+
+`enca -L {{language}} -x {{to_encoding}} < {{original_file}} > {{new_file}}`