diff --git a/metrics/irloc.sh b/metrics/irloc.sh
new file mode 100755
index 00000000..4f42ae8e
--- /dev/null
+++ b/metrics/irloc.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# The MIT License (MIT)
+#
+# Copyright (c) 2021-2024 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.
+set -e
+set -o pipefail
+
+output=$(realpath "$2")
+
+echo "IRLoC 0.000 " >"${output}"
\ No newline at end of file
diff --git a/tests/metrics/test-irloc.sh b/tests/metrics/test-irloc.sh
new file mode 100755
index 00000000..b23b1eaa
--- /dev/null
+++ b/tests/metrics/test-irloc.sh
@@ -0,0 +1,122 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2317
+# The MIT License (MIT)
+#
+# Copyright (c) 2021-2024 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.
+set -e
+set -o pipefail
+
+# TODO: #281 ENABLE THIS TESTS VIA REMOVING `exit 0` AND REMOVE `shellcheck disable=SC2317` on the top RIGHT AFTER IMPLEMENTING irloc.sh
+exit 0
+
+temp=$1
+stdout=$2
+
+{
+  tmp=$(mktemp -d /tmp/XXXX)
+  cd "${tmp}"
+  mkdir -p "${LOCAL}/${temp}"
+  touch "${LOCAL}/${temp}/file.java"
+  if ! "${LOCAL}/metrics/irloc.sh" "${LOCAL}/${temp}/file.java" "${LOCAL}/${temp}/stdout"
+  then
+    exit 1
+  fi
+} >"${stdout}" 2>&1
+echo "👍🏻 Failed in non-git directory"
+
+{
+  tmp=$(mktemp -d /tmp/XXXX)
+  cd "${tmp}"
+  rm -rf ./*
+  rm -rf .git
+  git init --quiet .
+  git config user.email 'foo@example.com'
+  git config user.name 'Foo'
+  file1="one.java"
+  if ! "${LOCAL}/metrics/irloc.sh" "./${file1}" "t0"
+  then
+    exit 1
+  fi
+} >"${stdout}" 2>&1
+echo "👍🏻 Failed in repo without given file"
+
+{
+  tmp=$(mktemp -d /tmp/XXXX)
+  cd "${tmp}"
+  rm -rf ./*
+  rm -rf .git
+  git init --quiet .
+  git config user.email 'foo@example.com'
+  git config user.name 'Foo'
+  file1="one.java"
+  touch "${file1}"
+  "${LOCAL}/metrics/irloc.sh" "./${file1}" "t0"
+  grep "IRLoC 0" "t0" # There are no commits in repo with given file
+} >"${stdout}" 2>&1
+echo "👍🏻 Didn't fail in repo without commits"
+
+{
+  tmp=$(mktemp -d /tmp/XXXX)
+  cd "${tmp}"
+  rm -rf ./*
+  rm -rf .git
+  git init --quiet .
+  git config user.email 'foo@example.com'
+  git config user.name 'Foo'
+  file1="one.java"
+  touch "${file1}"
+  git add "${file1}"
+  git commit --quiet -m "first file"
+  "${LOCAL}/metrics/irloc.sh" "./${file1}" "t0"
+  grep "IRLoC 0" "t0" # There are only empty files committed in the repo
+} >"${stdout}" 2>&1
+echo "👍🏻 Didn't fail in repo with zero lines of code"
+
+{
+  tmp=$(mktemp -d /tmp/XXXX)
+  cd "${tmp}"
+  rm -rf ./*
+  rm -rf .git
+  git init --quiet .
+  git config user.email 'foo@example.com'
+  git config user.name 'Foo'
+  file1="one.java"
+  echo "line" >"${file1}"
+  git add "${file1}"
+  git config commit.gpgsign false
+  git commit --quiet -m "first line"
+  "${LOCAL}/metrics/irloc.sh" "./${file1}" "t1"
+  grep "IRLoC 1 " "t1" # There is only line in repo and it is inside the given file
+
+  file2="two.java"
+  echo "line" >"${file2}"
+  git add "${file2}"
+  git commit --quiet -m "second line"
+  "${LOCAL}/metrics/irloc.sh" "./${file2}" "t2"
+  grep "IRLoC 0.5 " "t2" # There are two lines in repo and one for the given file
+
+  printf "line\nline" >>"file.txt"
+  git add "${file2}"
+  git commit --quiet -m "two more lines"
+  "${LOCAL}/metrics/irloc.sh" "./${file2}" "t3"
+  grep "IRLoC 0.75 " "t3" # There are four lines in repo and three for the given file
+} >"${stdout}" 2>&1
+echo "👍🏻 Correctly calculated the IRLoC (Impact Ratio by Lines of Code)"