diff --git a/.gitlab/ci/rules.gitlab-ci.yml b/.gitlab/ci/rules.gitlab-ci.yml
index 17e17712ff86..91320b8988ff 100644
--- a/.gitlab/ci/rules.gitlab-ci.yml
+++ b/.gitlab/ci/rules.gitlab-ci.yml
@@ -373,10 +373,6 @@
   - ".dockerignore"
   - "qa/**/*"
 
-.code-shell-patterns: &code-shell-patterns
-  - "bin/**/*"
-  - "tooling/**/*"
-
 # .code-backstage-qa-patterns + .workhorse-patterns
 .setup-test-env-patterns: &setup-test-env-patterns
   - "{package.json,yarn.lock}"
@@ -1779,13 +1775,6 @@
     - changes: *code-backstage-qa-patterns
     - changes: *startup-css-patterns
 
-###############
-# Shell rules #
-###############
-.shell:rules:
-  rules:
-    - changes: *code-shell-patterns
-
 #######################
 # Test metadata rules #
 #######################
diff --git a/.gitlab/ci/static-analysis.gitlab-ci.yml b/.gitlab/ci/static-analysis.gitlab-ci.yml
index 82c11cb8009c..8824d3d753f5 100644
--- a/.gitlab/ci/static-analysis.gitlab-ci.yml
+++ b/.gitlab/ci/static-analysis.gitlab-ci.yml
@@ -107,15 +107,3 @@ feature-flags-usage:
     when: always
     paths:
       - tmp/feature_flags/
-
-shellcheck:
-  extends:
-    - .default-retry
-    - .shell:rules
-  stage: lint
-  needs: []
-  image:
-    name: koalaman/shellcheck-alpine
-    entrypoint: [""]
-  script:
-    - tooling/bin/shellcheck
diff --git a/bin/background_jobs b/bin/background_jobs
index f301bb46ca90..d8929881f127 100755
--- a/bin/background_jobs
+++ b/bin/background_jobs
@@ -1,12 +1,12 @@
 #!/usr/bin/env bash
 
-cd "$(dirname "$0")/.." || exit
-
+cd $(dirname $0)/..
 app_root=$(pwd)
 sidekiq_workers=${SIDEKIQ_WORKERS:-1}
 sidekiq_queues=${SIDEKIQ_QUEUES:-*} # Queues to listen to; default to `*` (all)
 sidekiq_pidfile="$app_root/tmp/pids/sidekiq-cluster.pid"
 sidekiq_logfile="$app_root/log/sidekiq.log"
+gitlab_user=$(ls -l config.ru | awk '{print $3}')
 
 trap cleanup EXIT
 
@@ -17,26 +17,26 @@ warn()
 
 get_sidekiq_pid()
 {
-  if [ ! -f "$sidekiq_pidfile" ]; then
+  if [ ! -f $sidekiq_pidfile ]; then
     warn "No pidfile found at $sidekiq_pidfile; is Sidekiq running?"
     return
   fi
 
-  cat "$sidekiq_pidfile"
+  cat $sidekiq_pidfile
 }
 
 stop()
 {
   sidekiq_pid=$(get_sidekiq_pid)
 
-  if [ "$sidekiq_pid" ]; then
-    kill -TERM "$sidekiq_pid"
+  if [ $sidekiq_pid ]; then
+    kill -TERM $sidekiq_pid
   fi
 }
 
 restart()
 {
-  if [ -f "$sidekiq_pidfile" ]; then
+  if [ -f $sidekiq_pidfile ]; then
     stop
   fi
 
@@ -53,12 +53,12 @@ start_sidekiq()
   fi
 
   # sidekiq-cluster expects an argument per process.
-  for (( i=1; i<=sidekiq_workers; i++ ))
+  for (( i=1; i<=$sidekiq_workers; i++ ))
   do
     processes_args+=("${sidekiq_queues}")
   done
 
-  ${cmd} bin/sidekiq-cluster "${processes_args[@]}" -P "$sidekiq_pidfile" -e "$RAILS_ENV" "$@" 2>&1 | tee -a "$sidekiq_logfile"
+  ${cmd} bin/sidekiq-cluster "${processes_args[@]}" -P $sidekiq_pidfile -e $RAILS_ENV "$@" 2>&1 | tee -a $sidekiq_logfile
 }
 
 cleanup()
diff --git a/bin/mail_room b/bin/mail_room
index 3717e49e37ff..cf9d422909e0 100755
--- a/bin/mail_room
+++ b/bin/mail_room
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-cd "$(dirname "$0")/.." || exit 1
+cd $(dirname $0)/.. || exit 1
 app_root=$(pwd)
 
 mail_room_pidfile="$app_root/tmp/pids/mail_room.pid"
@@ -9,7 +9,8 @@ mail_room_config="$app_root/config/mail_room.yml"
 
 get_mail_room_pid()
 {
-  pid=$(cat "$mail_room_pidfile")
+  local pid
+  pid=$(cat $mail_room_pidfile)
   if [ -z "$pid" ] ; then
     echo "Could not find a PID in $mail_room_pidfile"
     exit 1
@@ -19,13 +20,13 @@ get_mail_room_pid()
 
 start()
 {
-  bin/daemon_with_pidfile "$mail_room_pidfile" bundle exec mail_room --log-exit-as json -q -c "$mail_room_config" >> "$mail_room_logfile" 2>&1
+  bin/daemon_with_pidfile $mail_room_pidfile bundle exec mail_room --log-exit-as json -q -c $mail_room_config >> $mail_room_logfile 2>&1
 }
 
 stop()
 {
   get_mail_room_pid
-  kill -TERM "$mail_room_pid"
+  kill -TERM $mail_room_pid
 }
 
 restart()
diff --git a/bin/parallel-rsync-repos b/bin/parallel-rsync-repos
index bd8493717669..21921148fa09 100755
--- a/bin/parallel-rsync-repos
+++ b/bin/parallel-rsync-repos
@@ -32,20 +32,20 @@ if [ -z "$RSYNC" ] ; then
   RSYNC=rsync
 fi
 
-if ! cd "$SRC" ; then
+if ! cd $SRC ; then
   echo "cd $SRC failed"
   exit 1
 fi
 
 rsyncjob() {
-	relative_dir="./${1#"$SRC"}"
+  relative_dir="./${1#$SRC}"
 
   if ! $RSYNC --delete --relative -a "$relative_dir" "$DEST" ; then
     echo "rsync $1 failed"
     return 1
   fi
 
-  echo "$1" >> "$LOGFILE"
+  echo "$1" >> $LOGFILE
 }
 
 export LOGFILE SRC DEST RSYNC
diff --git a/bin/web b/bin/web
index 4d2a16f66659..c1ab4718f0da 100755
--- a/bin/web
+++ b/bin/web
@@ -2,7 +2,7 @@
 
 set -e
 
-cd "$(dirname "$0")/.."
+cd $(dirname $0)/..
 app_root=$(pwd)
 
 puma_pidfile="$app_root/tmp/pids/puma.pid"
@@ -25,12 +25,12 @@ get_puma_pid()
 
 start()
 {
-  spawn_puma "$@" &
+  spawn_puma &
 }
 
 start_foreground()
 {
-  spawn_puma "$@"
+  spawn_puma
 }
 
 stop()
@@ -46,10 +46,10 @@ reload()
 
 case "$1" in
   start)
-    start "$@"
+    start
     ;;
   start_foreground)
-    start_foreground "$@"
+    start_foreground
     ;;
   stop)
     stop
diff --git a/bin/with_env b/bin/with_env
index b0647a50e274..e678fa2f0cc2 100755
--- a/bin/with_env
+++ b/bin/with_env
@@ -10,7 +10,6 @@ shift
 
 # Use set -a to export all variables defined in env_file.
 set -a
-# shellcheck disable=SC1090
 . "${env_file}"
 set +a
 
diff --git a/tooling/bin/shellcheck b/tooling/bin/shellcheck
deleted file mode 100755
index b499bfa3e5e0..000000000000
--- a/tooling/bin/shellcheck
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-
-root="$(cd "$(dirname "$0")/../.." || exit ; pwd -P)"
-
-if [ $# -ne 0 ]; then
-	shellcheck --exclude=SC1071 --external-sources "$@"
-else
-	find \
-		"${root}/bin" \
-		"${root}/tooling" \
-		-type f \
-		-not -path "*.swp" \
-		-not -path "*.rb" \
-		-not -path "*.js" \
-		-not -path "*.md" \
-		-not -path "*.haml" \
-		-not -path "*/Gemfile*" \
-		-not -path '*/.bundle*' \
-		-not -path '*/Makefile*' \
-		-print0 \
-	| xargs -0 shellcheck --exclude=SC1071 --external-sources --
-fi