diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index 8b13789..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/bin/git-contrib b/bin/git-contrib
index 6767551..23c130e 100755
--- a/bin/git-contrib
+++ b/bin/git-contrib
@@ -1,10 +1,9 @@
 #!/bin/sh
 
-user="$1"
-if test -z "$user"; then
-  echo "user name required." && exit 1
-else
-  count=`git log --oneline --pretty="format: %an" | grep "$user" | wc -l`
-  test $count -eq 0 && echo "$user did not contribute." && exit 1
-  git shortlog | grep "$user (" -A $count
-fi
\ No newline at end of file
+user="$*"
+
+test -z "$user" && echo "user name required." && exit 1
+
+count=`git log --oneline --pretty="format: %an" | grep "$user" | wc -l`
+test $count -eq 0 && echo "$user did not contribute." && exit 1
+git shortlog | grep "$user (" -A $count
diff --git a/bin/git-delete-branch b/bin/git-delete-branch
index f8dcdfd..78f62cb 100755
--- a/bin/git-delete-branch
+++ b/bin/git-delete-branch
@@ -1,5 +1,6 @@
 #!/bin/sh
 
-test -z $1 && echo "branch required." && exit 1
-git branch -D $1
-git branch -d -r origin/$1 && git push origin :$1
+branch=$1
+test -z $branch && echo "branch required." && exit 1
+git branch -D $branch
+git branch -d -r origin/$branch && git push origin :$branch
diff --git a/bin/git-delete-submodule b/bin/git-delete-submodule
index ceb1fa9..8b80e35 100755
--- a/bin/git-delete-submodule
+++ b/bin/git-delete-submodule
@@ -1,9 +1,11 @@
 #!/bin/sh
 
-test -z $1 && echo "submodule required" && exit 1
+submodule=$1
+
+test -z $submodule && echo "submodule required" && exit 1
 test ! -f .gitmodules && echo ".gitmodules file not found" && exit 2
 
-NAME=$(echo $1 | sed 's/\/$//g')
+NAME=$(echo $submodule | sed 's/\/$//g')
 test -z $(git config --file=.gitmodules submodule.$NAME.url) && echo "submodule not found" && exit 3
 
 git config --remove-section submodule.$NAME
diff --git a/bin/git-delete-tag b/bin/git-delete-tag
index ac9e8eb..470e378 100755
--- a/bin/git-delete-tag
+++ b/bin/git-delete-tag
@@ -1,4 +1,5 @@
 #!/bin/sh
 
-test -z $1 && echo "tag required." && exit 1
-git tag -d $1 && git push origin :refs/tags/$1
\ No newline at end of file
+tagname=$1
+test -z $tagname && echo "tag required." && exit 1
+git tag -d $tagname && git push origin :refs/tags/$tagname
diff --git a/bin/git-fresh-branch b/bin/git-fresh-branch
index 9952e49..e8dd7e0 100755
--- a/bin/git-fresh-branch
+++ b/bin/git-fresh-branch
@@ -1,6 +1,9 @@
 #!/bin/sh
 
-test -z $1 && echo "branch required." && exit 1
-git symbolic-ref HEAD refs/heads/$1
+branch=$1
+
+test -z $branch && echo "branch required." && exit 1
+
+git symbolic-ref HEAD refs/heads/$branch
 rm .git/index
-git clean -fdx
\ No newline at end of file
+git clean -fdx
diff --git a/bin/git-graft b/bin/git-graft
index ad212f7..a95a823 100755
--- a/bin/git-graft
+++ b/bin/git-graft
@@ -1,9 +1,10 @@
 #!/bin/sh
 
-test -z $1 && echo "source branch required." && exit 1
 src=$1
 dst=${2-master}
 
+test -z $src && echo "source branch required." && exit 1
+
 git checkout $dst \
   && git merge --no-ff $src \
-  && git branch -d $src
\ No newline at end of file
+  && git branch -d $src
diff --git a/bin/git-release b/bin/git-release
index 91fe9fd..43264f2 100755
--- a/bin/git-release
+++ b/bin/git-release
@@ -1,10 +1,10 @@
 #!/bin/sh
 
-tagname=$1
+tagname="$1"
 
-test -z $tagname && echo "tag required" && exit 1
+test -z "$tagname" && echo "tag required" && exit 1
 
-echo "... releasing $1"
-git tag -a "$1" -m "Release $1" \
+echo "... releasing $tagname"
+git tag -a "$tagname" -m "Release $tagname" \
   && git push --tags \
   && echo "... complete"
diff --git a/bin/git-touch b/bin/git-touch
index 30e65ad..42c1cf3 100755
--- a/bin/git-touch
+++ b/bin/git-touch
@@ -1,8 +1,8 @@
 #!/bin/sh
 
-filename=$1
+filename="$*"
 
-test -z $filename && echo "filename required" && exit 1
+test -z "$filename" && echo "filename required" && exit 1
 
-touch $filename \
-  && git add $filename
+touch "$filename" \
+  && git add "$filename"