diff --git a/bashrc b/bashrc
index d2546e0..edd5626 100755
--- a/bashrc
+++ b/bashrc
@@ -46,14 +46,40 @@ fi
 
 #################################
 
-if echo $PATH | grep "$HOME" >/dev/null 2>&1
+__search_string(){
+    # __search_string str1 str2
+    # return 0 if str2 is found in str1
+    expr "$1" : ".*$2.*" >/dev/null
+}
+
+if ! __search_string "$PATH" "$HOME/.local/bin"
+then
+    PATH="${PATH}:${HOME}/.local/bin:$HOME/.local/lib/gems/bin"
+fi
+
+if ismsys && ! __search_string "$PATH" /c/mingw/bin
+then
+    PATH="$PATH:/c/mingw/bin:/c/mingw/msys/1.0/bin"
+fi
+
+# # it is not so good
+# # http://archive.linux.or.jp/JF/JFdocs/Program-Library-HOWTO/shared-libraries.html
+# # http://superuser.com/questions/324613/installing-a-library-locally-in-home-directory-but-program-doesnt-recognize-it
+# without this ENV i cannot run tmux. another way is to use --disable-shared
+# when building tmux
+if ! __search_string "$LD_LIBRARY_PATH" "$HOME/.local/lib"
 then
-    PATH="${PATH}:${HOME}/.local/bin"
+    LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$HOME/.local/lib"
 fi
 
+##################################
 export LANG=ja_JP.UTF-8
 export LC_MESSAGES=C
 
+export TERMCAP="${TERMCAP}:vb="
+ismsys && export HOSTNAME
+export ENV=~/.shrc
+
 if false iswindows
 then
     export PAGER='tr -d \\r | less'
@@ -88,7 +114,20 @@ then
     TERM=screen-256color
 fi
 
-test -z "$TMP" && export TMP=/tmp/${USER}-tmp
+if test -z "$TMP"
+then
+    if test -n "$TMPDIR"
+    then
+        export TMP=$TMPDIR
+    elif test -n "$TEMP"
+    then
+        export TMP="$TEMP"
+    else
+        export TMP=/tmp
+    fi
+fi
+export TMP="${TMP}/${USER}-tmp"
+export TEMP="$TMP"
 mkdir -p "$TMP"
 
 ! iswindows && null type stty && {
@@ -269,10 +308,9 @@ null type port && {
 
 if iscygwin; then
     null type windate || \
-        alias windate="/c/Windows/System32/cmd.exe //c 'echo %DATE%-%TIME%'"
-    alias cygsu="cygstart /cygwinsetup.exe"
-    alias emacs="CYGWIN=tty emacs -nw"
-    alias ls="ls -CFG $(iswindows || test "$TERM" = dumb || echo --color=auto)"
+        alias windate="cmd.exe //c 'echo %DATE%-%TIME%'"
+    # alias cygsu="cygstart /cygwinsetup.exe"
+    # alias ls="ls -CFG $(iswindows || test "$TERM" = dumb || echo --color=auto)"
 fi
 
 g(){
@@ -324,10 +362,10 @@ s(){
     if git rev-parse --git-dir >/dev/null 2>&1
     then
         git grep -n "$@"
-    elif which ag >/dev/null
+    elif which ag >/dev/null 2>&1
     then
         ag --pager="$PAGER" "$@"
-    elif which ack >/dev/null
+    elif which ack >/dev/null 2>&1
     then
         ack --pager="$PAGER" "$@"
     else
diff --git a/profile b/profile
index 9179c3f..4cd8f3c 100755
--- a/profile
+++ b/profile
@@ -19,9 +19,6 @@
 
 # export PS1="\$ "
 export LC_TIME=C
-export TERMCAP="${TERMCAP}:vb="
-export HOSTNAME
-export ENV=~/.shrc
 
 mkdir -p $HOME/.local/lib/python/site-packages
 export PYTHONDOCS=/usr/share/doc/python/html/
@@ -35,39 +32,10 @@ export GEM_HOME="$HOME/.local/lib/gems"
 export PATH="$PATH:$HOME/.local/lib/gems/bin"
 export RUBYLIB="$RUBYLIB:$HOME/.local/lib/gems/lib"
 
-__add_to_path(){
-    for p in "$@"
-    do
-        echo $PATH | grep -E "^$p:|:$p:|:$p$" >/dev/null 2>&1 || \
-            PATH="$p:${PATH}"
-    done
-}
-# export PATH="${PATH}:${HOME}/bin"
-__add_to_path ${HOME}/.local/bin /c/mingw/bin /c/mingw/msys/1.0/bin
-
-# # it is not so good
-# # http://archive.linux.or.jp/JF/JFdocs/Program-Library-HOWTO/shared-libraries.html
-# # http://superuser.com/questions/324613/installing-a-library-locally-in-home-directory-but-program-doesnt-recognize-it
-# without this ENV i cannot run tmux. another way is to use --disable-shared
-# when building tmux
-export LD_LIBRARY_PATH="$HOME/.local/lib:$LD_LIBRARY_PATH"
-# this should be used when ./configure
-#export CFLAGS="$CFLAGS -I$HOME/.local/include"
-
 #_python_pkg_conf="/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/pkgconfig"
 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$_python_pkg_conf"
 
 export MANPATH="$MANPATH:$HOME/.local/share/man"
 
-type setterm >/dev/null 2>&1 && setterm -blank 30 -powersave on # -powerdown 10
 # in my environment powerdown does not work
-
-if test -n "$TMPDIR"
-then
-    export TMP=$TMPDIR
-else
-    export TMP=/tmp/
-fi
-export TMP="${TMP}${USER}-tmp"
-export TEMP="$TMP"
-mkdir -p "$TMP"
+type setterm >/dev/null 2>&1 && setterm -blank 30 -powersave on # -powerdown 10