diff --git a/.github/workflows/bashate.yml b/.github/workflows/bashate.yml
new file mode 100644
index 00000000..0217c5a1
--- /dev/null
+++ b/.github/workflows/bashate.yml
@@ -0,0 +1,43 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2021-2025 Yegor Bugayenko
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+name: bashate
+'on':
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  bashate:
+    timeout-minutes: 15
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.11
+      - run: pip install bashate
+      - run: |
+          readarray -t files < <(find . -name '*.sh')
+          bashate -i E006,E003 "${files[@]}"
+
diff --git a/filters/001-move-gits-to-temp.sh b/filters/001-move-gits-to-temp.sh
index 5c9f2b53..c086021a 100755
--- a/filters/001-move-gits-to-temp.sh
+++ b/filters/001-move-gits-to-temp.sh
@@ -26,7 +26,9 @@ set -o pipefail
 
 temp=$2
 
-if [ ! -e "${TARGET}/github" ]; then exit; fi
+if [ ! -e "${TARGET}/github" ]; then
+  exit;
+fi
 
 list=${temp}/git-to-move.txt
 find "${TARGET}/github" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'realpath --relative-to="${1}" "$2"' _ "${TARGET}/github" {} \; > "${list}"
@@ -37,7 +39,9 @@ mkdir -p "${gits}"
 if [ -s "${list}" ]; then
     while IFS= read -r repo; do
         src=${TARGET}/github/${repo}/.git
-        if [ ! -e "${src}" ]; then continue; fi
+        if [ ! -e "${src}" ]; then
+          continue;
+        fi
         mkdir -p "$(dirname "${gits}/${repo}")"
         mv "${src}" "${gits}/${repo}"
     done < "${list}"
diff --git a/filters/050-delete-long-lines.sh b/filters/050-delete-long-lines.sh
index 85e27c21..7f867844 100755
--- a/filters/050-delete-long-lines.sh
+++ b/filters/050-delete-long-lines.sh
@@ -41,7 +41,9 @@ candidates=${temp}/files-to-check-line-lengths.txt
 find "${home}" -type f -name '*.java' -print > "${candidates}"
 while IFS= read -r f; do
     length=$(LC_ALL=C awk '{ print length($0) }' < "${f}" | sort -n | tail -1)
-    if [ -z "${length}" ]; then continue; fi
+    if [ -z "${length}" ]; then
+      continue;
+    fi
     if [ "${length}" -gt "${max}" ]; then
         echo "${f}" >> "${list}"
         rm "${f}"
diff --git a/filters/080-delete-symlinks.sh b/filters/080-delete-symlinks.sh
index 2d4577f3..63a49cfa 100755
--- a/filters/080-delete-symlinks.sh
+++ b/filters/080-delete-symlinks.sh
@@ -34,7 +34,9 @@ touch "${list}"
 while true; do
     slice=${temp}/symlinks-to-delete.txt
     find "${home}" -mindepth 1 -type l -print > "${slice}"
-    if [ ! -s "${slice}" ]; then break; fi
+    if [ ! -s "${slice}" ];then
+      break;
+    fi
     while IFS= read -r link; do
         rm "${link}"
         echo "${link}" >> "${list}"
diff --git a/filters/090-delete-empty-directories.sh b/filters/090-delete-empty-directories.sh
index ab036662..f3f97593 100755
--- a/filters/090-delete-empty-directories.sh
+++ b/filters/090-delete-empty-directories.sh
@@ -34,7 +34,9 @@ touch "${list}"
 while true; do
     slice=${temp}/empty-directories-to-delete.txt
     find "${home}" -mindepth 1 -type d -empty -print > "${slice}"
-    if [ ! -s "${slice}" ]; then break; fi
+    if [ ! -s "${slice}" ]; then
+        break
+    fi
     while IFS= read -r dir; do
         rm -r "${dir}"
         echo "${dir}" >> "${list}"
diff --git a/filters/999-move-gits-back.sh b/filters/999-move-gits-back.sh
index 873eb215..cdfd02b7 100755
--- a/filters/999-move-gits-back.sh
+++ b/filters/999-move-gits-back.sh
@@ -26,7 +26,9 @@ set -o pipefail
 
 temp=$2
 
-if [ ! -e "${temp}/gits" ]; then exit; fi
+if [ ! -e "${temp}/gits" ]; then
+  exit;
+fi
 
 repos=${temp}/git-repos-moving-back.txt
 
@@ -35,7 +37,9 @@ find "${temp}/gits" -maxdepth 2 -mindepth 2 -type d -exec bash -c 'realpath --re
 if [ -s "${repos}" ]; then
     while IFS= read -r repo; do
         dest=${TARGET}/github/${repo}
-        if [ ! -e "${dest}" ]; then continue; fi
+        if [ ! -e "${dest}" ]; then
+          continue;
+        fi
         mv "${temp}/gits/${repo}" "${dest}/.git"
     done < "${repos}"
 fi
diff --git a/help/parallel.sh b/help/parallel.sh
index 30778e79..8defec29 100755
--- a/help/parallel.sh
+++ b/help/parallel.sh
@@ -25,7 +25,9 @@ set -o pipefail
 
 jobs=$1
 x=$2
-if [ -z "${x}" ]; then x=1; fi
+if [ -z "${x}" ]; then
+  x=1;
+fi
 
 cores=$(echo "$(nproc) * ${x}" | bc)
 args=(
diff --git a/metrics/rfvc.sh b/metrics/rfvc.sh
index 15397f5a..c4489e06 100755
--- a/metrics/rfvc.sh
+++ b/metrics/rfvc.sh
@@ -32,7 +32,7 @@ base=$(basename "${java}")
 # To check that file was added in commit any time
 if git status > /dev/null 2>&1 && test -n "$(git log --oneline -- "${base}")"; then
     my_rvc=$(git log --pretty=format:"%h" "${java}" | wc -l)
-    ((my_rvc+=1))
+    my_rvc=$((my_rvc+1))
     files=$(git ls-tree -r "$(git branch --show-current)" --name-only)
     all_rvcs=0
 
@@ -46,8 +46,8 @@ if git status > /dev/null 2>&1 && test -n "$(git log --oneline -- "${base}")"; t
         rest=''                     #   and there is no 'rest'
       fi
       rvc=$(git log --pretty=format:"%h" "$first" | wc -l)
-      ((rvc+=1))
-      ((all_rvcs+=rvc))
+      rvc=$((rvc+1))
+      all_rvcs=$((all_rvcs+rvc))
       files=$rest
     done
     rfvc=$(python3 -c "print(${my_rvc} / ${all_rvcs})")
diff --git a/metrics/rfvh.sh b/metrics/rfvh.sh
index 0aa4fdd3..86dda02d 100755
--- a/metrics/rfvh.sh
+++ b/metrics/rfvh.sh
@@ -45,7 +45,7 @@ if git status > /dev/null 2>&1 && test -n "$(git log --oneline -- "${base}")"; t
         rest=''                     #   and there is no 'rest'
       fi
       rvh=$(git log -L:"class\s:${first}" | grep -E "^[+-].*$" | grep -Ev "^\-\-\-\s\S+$" | grep -Evc "^\+\+\+\s\S+$")
-      ((all_rvhs+=rvh))
+      all_rvhs=$((all_rvhs+rvh))
       files=$rest
     done
     rfvh=$(python3 -c "print(${my_rvh} / ${all_rvhs})")
diff --git a/steps/clone.sh b/steps/clone.sh
index 20eb9d22..2c6081b9 100755
--- a/steps/clone.sh
+++ b/steps/clone.sh
@@ -41,8 +41,12 @@ declare -i repo=0
 sh="$(dirname "$0")/clone-repo.sh"
 while IFS=',' read -r r tag tail; do
     repo=$((repo+1))
-    if [ -z "${tag}" ]; then tag='master'; fi
-    if [ "${tag}" = '.' ]; then tag='master'; fi
+    if [ -z "${tag}" ]; then
+      tag='master';
+    fi
+    if [ "${tag}" = '.' ]; then
+      tag='master';
+    fi
     if [ -e "${TARGET}/github/${r}" ]; then
         echo "${r}: Git repo is already here (${tail})"
     else
diff --git a/steps/install.sh b/steps/install.sh
index 6aae16e8..610f12c7 100755
--- a/steps/install.sh
+++ b/steps/install.sh
@@ -82,7 +82,7 @@ if "${LOCAL}/help/is-linux.sh"; then
   "${LOCAL}/help/sudo.sh" apt-get install --yes coreutils
 fi
 
-function install_package() {
+install_package() {
     local PACKAGE=$1
     if ! eval "$PACKAGE" --version >/dev/null 2>&1; then
         if "${LOCAL}/help/is-linux.sh"; then
diff --git a/steps/lint.sh b/steps/lint.sh
index 25e90e5f..f3b2c0ee 100755
--- a/steps/lint.sh
+++ b/steps/lint.sh
@@ -70,4 +70,6 @@ for mask in *.sh *.py *.rb *.yml *.java Makefile; do
         -not -path "$(realpath "${LOCAL}")/test-zone/**" \
         -not -path "$(realpath "${LOCAL}")/venv/**")
 done
-if [[ "${failed}" = "true" ]]; then exit; fi
+if [[ "${failed}" = "true" ]]; then
+  exit;
+fi
diff --git a/steps/measure-file.sh b/steps/measure-file.sh
index 9f40a751..27e1043e 100755
--- a/steps/measure-file.sh
+++ b/steps/measure-file.sh
@@ -51,5 +51,5 @@ echo "${metrics}" | {
     done
     echo "$(echo "${metrics}" | wc -w | xargs) scripts \
 collected $(find "$(dirname "${javam}")" -type f -name "$(basename "${javam}").*" | wc -l | xargs) metrics (sum=${sum}) \
-for $(basename "${java}") (${pos}/${total})$("${LOCAL}/help/tdiff.sh" "${start}")"
+for: $(basename "${java}") (${pos}/${total})$("${LOCAL}/help/tdiff.sh" "${start}")"
 }
diff --git a/steps/report.sh b/steps/report.sh
index 095991e9..29aa26f6 100755
--- a/steps/report.sh
+++ b/steps/report.sh
@@ -74,7 +74,9 @@ for idx in "${!groups[@]}"; do
     else
         group_metrics=$(grep -oE ".*\b${groups[$idx]}\b.*" "${list}" || :)
     fi
-    if [[ $(printf "%s\n" "${group_metrics[@]}" | grep -c "item") -eq 0 ]]; then continue; fi
+    if [[ $(printf "%s\n" "${group_metrics[@]}" | grep -c "item") -eq 0 ]]; then
+      continue;
+    fi
     printf "\\item %s\n" "${groups[$idx]}" >> "${st_list}"
     printf "\\\\begin{itemize}\n" >> "${st_list}"
     while IFS= read -r metric; do
diff --git a/steps/unregister.sh b/steps/unregister.sh
index 1aa33721..902af6b7 100755
--- a/steps/unregister.sh
+++ b/steps/unregister.sh
@@ -41,7 +41,9 @@ echo "${head}" > "${csv}"
 declare -i total=0
 declare -i good=0
 while IFS=',' read -r r tag tail; do
-    if [ -z "${r}" ]; then continue; fi
+    if [ -z "${r}" ]; then
+      continue;
+    fi
     total=$((total+1))
     if [ ! -e "${TARGET}/github/${r}" ]; then
         echo "The clone of ${r} is absent, unregistered"