diff --git a/shell/common.sh b/shell/common.sh
index a17722f4..9b3d2bfb 100644
--- a/shell/common.sh
+++ b/shell/common.sh
@@ -1,11 +1,11 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 CACHE_DIR="$DOTFILES/shell/zsh/cache"
 
 is-callable() { command -v "$1" >/dev/null; }
 is-interactive() { [[ $- == *i* ]]; }
 is-root() { [[ "$UID" -eq 0 ]]; }
-is-ssh()  { [[ "$SSH_CONNECTION" != '' ]]; }
+is-ssh()  { [[ $SSH_CONNECTION ]]; }
 
 info()    { printf "\r[ \033[00;34m..\033[0m ] $1\n"; }
 success() { printf "\r\033[2K[ \033[00;32mOK\033[0m ] $1\n"; }
@@ -14,19 +14,18 @@ fail()    { printf "\r\033[2K[\033[0;31mFAIL\033[0m] $1\n"; echo; exit; }
 load () { source "$DOTFILES/$*"; }
 
 loadall () {
-    for file in "$DOTFILES"/$1/*.zsh;
-    do
+    for file in "$DOTFILES"/$1/*.zsh; do
         source "$file"
     done
 }
 
 cache() {
-    [ -z "$CACHE_DIR" ] && error "Cache not set!"
-    [ ! -d "$CACHE_DIR" ] && mkdir -p "$CACHE_DIR"
+    [[ -z "$CACHE_DIR" ]] && error "Cache not set!"
+    [[ -d "$CACHE_DIR" ]] || mkdir -p "$CACHE_DIR"
 
     is-callable "$1" || return 1
     local cache="${CACHE_DIR}/$1-$(basename $SHELL)"
-    if ! [[ -f "$cache" && -s "$cache" ]]; then
+    if [[ ! -f "$cache" && -s "$cache" ]]; then
         echo "Caching $1"
         $@ > "$cache" 2> /dev/null
     fi
@@ -34,12 +33,12 @@ cache() {
 }
 
 cache-clear() {
-    [ -d "$CACHE_DIR" ] && rm -f "$CACHE_DIR/*"
+    [[ -d $CACHE_DIR ]] && rm -f "$CACHE_DIR/*"
 }
 
 repo() {
-    if [ ! -d "$2" ];
-    then
-        git clone "https://github.com/$1" "$2"
-    fi
+    [[ -d $2 ]] || git clone --recursive "https://github.com/$1" "$2"
 }
+
+#
+umask 077