diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 0000000..317a217
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,19 @@
+name: reviewdog
+on:
+  push:
+    branches-ignore:
+      - 'gh-pages'
+
+jobs:
+  shellcheck:
+    name: shellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: shellcheck
+        uses: reviewdog/action-shellcheck@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          reporter: github-check
+          path: "./commands/inits/data"
+          pattern: "*.sh"
diff --git a/commands/inits/data/aliases.sh b/commands/inits/data/aliases.sh
index c3201bc..dfdf3fe 100644
--- a/commands/inits/data/aliases.sh
+++ b/commands/inits/data/aliases.sh
@@ -1,3 +1,5 @@
+# source file: aliases.sh
+# shellcheck shell=sh
 alias gs='scmpuff_status'
 alias ga='git add'
 alias gd='git diff'
diff --git a/commands/inits/data/git_wrapper.sh b/commands/inits/data/git_wrapper.sh
index 2c4c17a..403d35a 100644
--- a/commands/inits/data/git_wrapper.sh
+++ b/commands/inits/data/git_wrapper.sh
@@ -1,3 +1,6 @@
+# source file: git_wrapper.sh
+# shellcheck shell=sh
+
 # Remove any existing git alias or function
 unalias git > /dev/null 2>&1
 unset -f git > /dev/null 2>&1
@@ -6,7 +9,7 @@ unset -f git > /dev/null 2>&1
 SCMPUFF_GIT_CMD=${SCMPUFF_GIT_CMD:-"$(\which git)"}
 export SCMPUFF_GIT_CMD
 
-function git() {
+git() {
   case $1 in
     commit|blame|log|rebase|merge)
       scmpuff exec -- "$SCMPUFF_GIT_CMD" "$@";;
diff --git a/commands/inits/data/status_shortcuts.sh b/commands/inits/data/status_shortcuts.sh
index d22f6e9..3fdd991 100644
--- a/commands/inits/data/status_shortcuts.sh
+++ b/commands/inits/data/status_shortcuts.sh
@@ -1,53 +1,53 @@
+# source file: status_shortcuts.sh
+# shellcheck shell=sh
+
 scmpuff_status() {
-  local scmpuff_env_char="e"
+  __scmpuff_env_char="e"
 
   # Ensure shwordsplit is on for zsh
   if [ -n "$ZSH_VERSION" ]; then setopt shwordsplit; fi;
 
   # Run scmpuff status, store output
-  # (`local` needs to be on its own line otherwise exit code is swallowed!)
-  local cmd_output
-  cmd_output="$(/usr/bin/env scmpuff status --filelist $@)"
+  __scmpuff_status_cmd_output=$(/usr/bin/env scmpuff status --filelist "$@")
+  __scmpuff_status_exit=$?
 
   # if there was an error, exit prematurely, and pass along the exit code
   # (STDOUT was swallowed but not STDERR, so user should still see error msg)
-  local es=$?
-  if [ $es -ne 0 ]; then
-    return $es
+  if [ $__scmpuff_status_exit -ne 0 ]; then
+    return $__scmpuff_status_exit
   fi
 
   # Fetch list of files (from first line of script output)
-  files="$(echo "$cmd_output" | head -n 1)"
+  __scmpuff_files="$(echo "$__scmpuff_status_cmd_output" | head -n 1)"
 
   # Export numbered env variables for each file
   scmpuff_clear_vars
-  IFS=$'\t'
-  local e=1
-  for file in $files; do
-    export $scmpuff_env_char$e="$file"
-    let e++
+  IFS=$(printf '\t')
+  __scmpuff_loop_e=1
+  for __scmpuff_file in $__scmpuff_files; do
+    export $__scmpuff_env_char$__scmpuff_loop_e="$__scmpuff_file"
+    __scmpuff_loop_e=$((__scmpuff_loop_e+1)) #e++
   done
-  IFS=$' \t\n'
+  IFS=$(printf ' \t\n')
 
   # Print status (from line two onward)
-  echo "$cmd_output" | tail -n +2
+  echo "$__scmpuff_status_cmd_output" | tail -n +2
 
   # Reset zsh environment to default
   if [ -n "$ZSH_VERSION" ]; then unsetopt shwordsplit; fi;
 }
 
-
 # Clear numbered env variables
 scmpuff_clear_vars() {
-  local scmpuff_env_char="e"
-  local i
-
-  for (( i=1; i<=999; i++ )); do
-    local env_var_i=${scmpuff_env_char}${i}
-    if [[ -n ${env_var_i} ]]; then
-      unset ${env_var_i}
+  __scmpuff_env_char="e"
+  __scmpuff_loop_i=0
+  while [ $__scmpuff_loop_i -le 999 ]; do
+    __scmpuff_env_var_i=${__scmpuff_env_char}${__scmpuff_loop_i}
+    if [ -n "$__scmpuff_env_var_i" ]; then
+      unset "$__scmpuff_env_var_i"
     else
       break
     fi
+    __scmpuff_loop_i=$((__scmpuff_loop_i+1)) #i++
   done
 }
diff --git a/features/command_init.feature b/features/command_init.feature
index bb299f2..8a759db 100644
--- a/features/command_init.feature
+++ b/features/command_init.feature
@@ -26,7 +26,7 @@ Feature: init command
 
   Scenario Outline: --wrap controls git cmd wrapping in output (default: yes)
     When I successfully run `scmpuff init <flags>`
-    Then the output <should?> contain "function git()"
+    Then the output <should?> contain "git() {"
     Examples:
       | flags              | should?    |
       | -s                 | should     |