diff --git a/.vimrc b/.vimrc
index 2f3fe0a..9c25b7a 100644
--- a/.vimrc
+++ b/.vimrc
@@ -20,6 +20,8 @@ set smarttab
 set tabstop=2
 set whichwrap=b,s,h,l,<,>,[,]
 set backspace=indent,eol,start
+set encoding=utf-8
+set fileencodings=iso-2022-jp,euc-jp,sjis,utf-8
 autocmd BufWritePre * :%s/\s\+$//ge
 "autocmd BufWritePre * :%s/\t/  /ge
 
diff --git a/.zshrc b/.zshrc
index 7fa8a63..1327293 100644
--- a/.zshrc
+++ b/.zshrc
@@ -35,6 +35,13 @@ alias mkdir='mkdir -p'
 alias sudo='sudo '
 alias rot13='tr A-Za-z N-ZA-Mn-za-m'
 
+if [ "$(uname)" = 'Darwin' ]; then
+  export LSCOLORS=xbfxcxdxbxegedabagacad
+  alias ls='ls -G'
+else
+  alias ls='ls --color=auto'
+fi
+
 funciton md2pdf (){ pandoc -f markdown -V documentclass=ltjarticle -V geometry:margin=1in --latex-engine=lualatex $@ -o ${1%.*}.pdf }
 
 funciton md2pdf-ref (){ pandoc -f markdown -V documentclass=ltjarticle -V geometry:margin=1in --latex-engine=lualatex --filter pandoc-crossref $@ -o ${1%.*}.pdf }
@@ -51,3 +58,4 @@ export PATH=/usr/local/share/git-core/contrib/diff-highlight:$PATH
 export PATH=$HOME/isrb2:$PATH
 export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
 eval "$(rbenv init -)"
+export LC_COLLATE="C"