diff --git a/.github/workflows/bash_ci.yml b/.github/workflows/bash_ci.yml
new file mode 100644
index 0000000..18e2411
--- /dev/null
+++ b/.github/workflows/bash_ci.yml
@@ -0,0 +1,16 @@
+name: bash_ci
+on:
+  - pull_request
+jobs:
+  sh-checker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run the sh-checker
+        uses: luizm/action-sh-checker@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SHELLCHECK_OPTS: -e SC1004 # exclude some shellcheck warnings.
+          SHFMT_OPTS: -s # arguments to shfmt.
+        with:
+          sh_checker_comment: true
diff --git a/bashrc_snippet.sh b/bashrc_snippet.sh
index 52a9931..af5a17b 100644
--- a/bashrc_snippet.sh
+++ b/bashrc_snippet.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # Configuration variables
 GIT_SHOW_BRANCH=true
 GIT_SHOW_COMMITS=true
@@ -8,62 +10,69 @@ GIT_SHOW_UNCOMMITTED_CHANGES=true
 GIT_SHOW_UNTRACKED_FILES=true
 
 is_git_repository() {
-  git rev-parse --is-inside-work-tree >/dev/null 2>&1 && [ -d .git ]
+	git rev-parse --is-inside-work-tree >/dev/null 2>&1 && [ -d .git ]
 }
 
 get_git_info() {
-  local output=""
+	local output=""
 
-  if is_git_repository; then
-    local current_branch=$(git symbolic-ref --short HEAD 2>/dev/null)
+	if is_git_repository; then
+		local current_branch
+		current_branch=$(git symbolic-ref --short HEAD 2>/dev/null)
 
-    if [ "$GIT_SHOW_USER_INFO" = true ]; then
-      local user_name=$(git config user.name)
-      local user_email=$(git config user.email)
-      output+="($user_name <$user_email>) "
-    fi
+		if [ "$GIT_SHOW_USER_INFO" = true ]; then
+			local user_name
+			user_name=$(git config user.name)
+			local user_email
+			user_email=$(git config user.email)
+			output+="($user_name <$user_email>) "
+		fi
 
-    if [ "$GIT_SHOW_BRANCH" = true ]; then
-      output+="$current_branch "
-    fi
+		if [ "$GIT_SHOW_BRANCH" = true ]; then
+			output+="$current_branch "
+		fi
 
-    if [ "$GIT_SHOW_COMMITS" = true ]; then
-      local commits_ahead=$(git rev-list --count --left-only HEAD...@'{u}' 2>/dev/null)
-      if [ "$commits_ahead" != "0" ]; then
-        output+="↑$commits_ahead "
-      fi
-    fi
+		if [ "$GIT_SHOW_COMMITS" = true ]; then
+			local commits_ahead
+			commits_ahead=$(git rev-list --count --left-only HEAD...@'{u}' 2>/dev/null)
+			if [ "$commits_ahead" != "0" ]; then
+				output+="↑$commits_ahead "
+			fi
+		fi
 
-    if [ "$GIT_SHOW_STAGED_COMMITS" = true ]; then
-      local commits_behind=$(git rev-list --count --right-only HEAD...@'{u}' 2>/dev/null)
-      if [ "$commits_behind" != "0" ]; then
-        output+="↓$commits_behind "
-      fi
-    fi
+		if [ "$GIT_SHOW_STAGED_COMMITS" = true ]; then
+			local commits_behind
+			commits_behind=$(git rev-list --count --right-only HEAD...@'{u}' 2>/dev/null)
+			if [ "$commits_behind" != "0" ]; then
+				output+="↓$commits_behind "
+			fi
+		fi
 
-    if [ "$GIT_SHOW_FILES_DIFF_COUNT" = true ]; then
-      local files_diff_count=$(git diff --name-only "$current_branch" "origin/$current_branch" 2>/dev/null | wc -l | tr -d '[:space:]')
-      if [ "$files_diff_count" != "0" ]; then
-        output+="Δ$files_diff_count "
-      fi
-    fi
+		if [ "$GIT_SHOW_FILES_DIFF_COUNT" = true ]; then
+			local files_diff_count
+			files_diff_count=$(git diff --name-only "$current_branch" "origin/$current_branch" 2>/dev/null | wc -l | tr -d '[:space:]')
+			if [ "$files_diff_count" != "0" ]; then
+				output+="Δ$files_diff_count "
+			fi
+		fi
 
-    if [ "$GIT_SHOW_UNCOMMITTED_CHANGES" = true ]; then
-      git diff --quiet 2>/dev/null || output+="+ "
-    fi
+		if [ "$GIT_SHOW_UNCOMMITTED_CHANGES" = true ]; then
+			git diff --quiet 2>/dev/null || output+="+ "
+		fi
 
-    if [ "$GIT_SHOW_UNTRACKED_FILES" = true ]; then
-      local untracked_files=$(git ls-files --others --exclude-standard 2>/dev/null | wc -l | tr -d '[:space:]')
-      if [ "$untracked_files" != "0" ]; then
-        output+="✚$untracked_files "
-      fi
-    fi
+		if [ "$GIT_SHOW_UNTRACKED_FILES" = true ]; then
+			local untracked_files
+			untracked_files=$(git ls-files --others --exclude-standard 2>/dev/null | wc -l | tr -d '[:space:]')
+			if [ "$untracked_files" != "0" ]; then
+				output+="✚$untracked_files "
+			fi
+		fi
 
-  else
-    output="Not a Git repository"
-  fi
+	else
+		output="Not a Git repository"
+	fi
 
-  iterm2_set_user_var gitInfo "$output"
+	iterm2_set_user_var gitInfo "$output"
 }
 
 # Call get_git_info when the shell prompt is displayed