diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index dc1a6f3f..300ef954 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Install required dependencies
         run: |
           apt update
-          apt install -y sudo
+          apt install --yes sudo
           sudo apt install --yes --no-install-recommends git
       # workaround for https://github.com/actions/runner/issues/2033
       - name: ownership workaround
@@ -186,12 +186,14 @@ jobs:
         run: dotnet fsi scripts/inconsistentVersionsInGitHubCI.fsx
       - name: Check there are no inconsistent versions in nuget package references of F# scripts
         run: dotnet fsi scripts/inconsistentVersionsInFSharpScripts.fsx
+      - name: Check there are no non-verbose flags in scripts and CI YML files
+        run: dotnet fsi scripts/nonVerboseFlagsInGitHubCIAndScripts.fsx
       - name: Install prettier
         run: npm install prettier@2.8.3
       - name: Change file permissions
         # We need this step so we can change the files using `npx prettier --write` in the next step.
         # Otherwise we get permission denied error in the CI.
-        run: sudo chmod 777 -R .
+        run: sudo chmod 777 --recursive .
       - name: Run "prettier" to check the style of our TypeScript and YML code
         run: |
           sudo npx prettier --quote-props=consistent --write './**/*.ts'
diff --git a/ReadMe.md b/ReadMe.md
index a9f1621b..709e597f 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -10,6 +10,7 @@ This is a repository that contains several useful things that other `nblockchain
     * [EOF without EOL detection](scripts/eofConvention.fsx).
     * [Mixed line-endings detection](scripts/mixedLineEndings.fsx).
     * [Auto-wrap the latest commit message](scripts/wrapLatestCommitMsg.fsx).
+    * [Detect non-verbose flags (e.g. `dotnet build -c Debug` instead of `dotnet build --configuration Debug`) being used in scripts or YML CI files (there are exceptions, e.g. `env -S`)](scripts/nonVerboseFlagsInGitHubCIAndScripts.fsx).
     * Use of unpinned versions:
         * [Use of `-latest` suffix in `runs-on:` GitHubCI tags](scripts/unpinnedGitHubActionsImageVersions.fsx).
         * [Use of asterisk (*) in `PackageReference` items of .NET projects](scripts/unpinnedDotnetPackageVersions.fsx).
@@ -25,4 +26,3 @@ More things to come:
 - Detect .fsx files without +x attrib.
 - Detect old versions of FSharpLint and fantomas/fantomless being used.
 - Detect old versions of .editorconfig or Directory.Build.props being used.
-- Detect non-verbose flags (e.g. `dotnet build -c Debug` instead of `dotnet build --configuration Debug`) being used in scripts or YML CI files (there are exceptions, e.g. `env -S`).
diff --git a/scripts/nonVerboseFlagsInGitHubCIAndScripts.fsx b/scripts/nonVerboseFlagsInGitHubCIAndScripts.fsx
new file mode 100644
index 00000000..6ffb8801
--- /dev/null
+++ b/scripts/nonVerboseFlagsInGitHubCIAndScripts.fsx
@@ -0,0 +1,31 @@
+#!/usr/bin/env -S dotnet fsi
+
+open System
+open System.IO
+
+#load "../src/FileConventions/Library.fs"
+#load "../src/FileConventions/Helpers.fs"
+
+let rootDir = Path.Combine(__SOURCE_DIRECTORY__, "..") |> DirectoryInfo
+
+let validExtensions =
+    seq {
+        ".yml"
+        ".fsx"
+        ".fs"
+        ".sh"
+    }
+
+let invalidFiles =
+    validExtensions
+    |> Seq.map(fun ext ->
+        Helpers.GetInvalidFiles
+            rootDir
+            ("*" + ext)
+            FileConventions.NonVerboseFlags
+    )
+    |> Seq.concat
+
+let message = "Please don't use non-verbose flags in the following files:"
+
+Helpers.AssertNoInvalidFiles invalidFiles message
diff --git a/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag1.yml b/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag1.yml
new file mode 100644
index 00000000..38ca7e8e
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag1.yml
@@ -0,0 +1,11 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  file-conventions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Print "Hello World!"
+        run: env -S "echo Hello World!"
diff --git a/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag2.yml b/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag2.yml
new file mode 100644
index 00000000..1a722cfa
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyCIWithAcceptedNonVerboseFlag2.yml
@@ -0,0 +1,11 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  file-conventions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: unzip a file
+        run: unzip -n path-to-file.zip
diff --git a/src/FileConventions.Test/DummyFiles/DummyCIWithNonVerboseFlag.yml b/src/FileConventions.Test/DummyFiles/DummyCIWithNonVerboseFlag.yml
new file mode 100644
index 00000000..d06a1c9b
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyCIWithNonVerboseFlag.yml
@@ -0,0 +1,11 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  file-conventions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Print apt version
+        run: apt -v
diff --git a/src/FileConventions.Test/DummyFiles/DummyCIWithoutNonVerboseFlags.yml b/src/FileConventions.Test/DummyFiles/DummyCIWithoutNonVerboseFlags.yml
new file mode 100644
index 00000000..d8efcfc1
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyCIWithoutNonVerboseFlags.yml
@@ -0,0 +1,11 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  file-conventions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Print apt version
+        run: apt --version
diff --git a/src/FileConventions.Test/DummyFiles/DummyScriptWithNonVerboseFlag.fsx b/src/FileConventions.Test/DummyFiles/DummyScriptWithNonVerboseFlag.fsx
new file mode 100644
index 00000000..097eeaaa
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyScriptWithNonVerboseFlag.fsx
@@ -0,0 +1,17 @@
+#!/usr/bin/env -S dotnet fsi
+
+#r "nuget: Fsdk, Version=0.6.0--date20230214-0422.git-1ea6f62"
+
+open Fsdk
+open Fsdk.Process
+
+let gitRemote =
+    {
+        Command = "git"
+        Arguments = "remote -v"
+    }
+
+let gitRemoteOutput =
+    Process
+        .Execute(gitRemote, Echo.All)
+        .UnwrapDefault()
diff --git a/src/FileConventions.Test/DummyFiles/DummyScriptWithoutNonVerboseFlag.fsx b/src/FileConventions.Test/DummyFiles/DummyScriptWithoutNonVerboseFlag.fsx
new file mode 100644
index 00000000..6b13300e
--- /dev/null
+++ b/src/FileConventions.Test/DummyFiles/DummyScriptWithoutNonVerboseFlag.fsx
@@ -0,0 +1,17 @@
+#!/usr/bin/env -S dotnet fsi
+
+#r "nuget: Fsdk, Version=0.6.0--date20230214-0422.git-1ea6f62"
+
+open Fsdk
+open Fsdk.Process
+
+let gitRemote =
+    {
+        Command = "git"
+        Arguments = "remote --version"
+    }
+
+let gitRemoteOutput =
+    Process
+        .Execute(gitRemote, Echo.All)
+        .UnwrapDefault()
diff --git a/src/FileConventions.Test/FileConventions.Test.fs b/src/FileConventions.Test/FileConventions.Test.fs
index 5e756b3a..15ba902e 100644
--- a/src/FileConventions.Test/FileConventions.Test.fs
+++ b/src/FileConventions.Test/FileConventions.Test.fs
@@ -547,3 +547,81 @@ let DetectInconsistentVersionsInFSharpScripts2() =
             (Some(Seq.singleton "DummyScripts")),
         Is.EqualTo false
     )
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI1() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyCIWithNonVerboseFlag.yml"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo true)
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI2() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyCIWithoutNonVerboseFlags.yml"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo false)
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI3() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyCIWithAcceptedNonVerboseFlag1.yml"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo false)
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI4() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyScriptWithNonVerboseFlag.fsx"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo true)
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI5() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyScriptWithoutNonVerboseFlag.fsx"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo false)
+
+
+[<Test>]
+let NonVerboseFlagsInGitHubCI6() =
+    let fileInfo =
+        (FileInfo(
+            Path.Combine(
+                dummyFilesDirectory.FullName,
+                "DummyCIWithAcceptedNonVerboseFlag2.yml"
+            )
+        ))
+
+    Assert.That(NonVerboseFlags fileInfo, Is.EqualTo false)
diff --git a/src/FileConventions/Library.fs b/src/FileConventions/Library.fs
index 9fc1f1e9..c5d36f8b 100644
--- a/src/FileConventions/Library.fs
+++ b/src/FileConventions/Library.fs
@@ -329,3 +329,52 @@ let DetectInconsistentVersionsInFSharpScripts
         false
     else
         DetectInconsistentVersionsInNugetRefsInFSharpScripts fsxFiles
+
+let allowedNonVerboseFlags =
+    seq {
+        "unzip"
+
+        // even if env in linux has --split-string=foo as equivalent to env -S, it
+        // doesn't seem to be present in macOS' env man page and doesn't work either
+        "env -S"
+    }
+
+let NonVerboseFlags(fileInfo: FileInfo) =
+    let validExtensions =
+        seq {
+            ".yml"
+            ".fsx"
+            ".fs"
+            ".sh"
+        }
+
+    let isFileExtentionValid =
+        validExtensions
+        |> Seq.map(fun ext -> fileInfo.FullName.EndsWith ext)
+        |> Seq.contains true
+
+    if not isFileExtentionValid then
+        let sep = ","
+
+        failwith
+            $"NonVerboseFlags function only supports {String.concat sep validExtensions} files."
+
+    let fileLines = File.ReadLines fileInfo.FullName
+
+    let nonVerboseFlagsRegex = Regex("\\s-[a-zA-Z]\\b", RegexOptions.Compiled)
+
+    let numInvalidFlags =
+        fileLines
+        |> Seq.filter(fun line ->
+            let nonVerboseFlag = nonVerboseFlagsRegex.IsMatch line
+
+            let allowedNonVerboseFlag =
+                allowedNonVerboseFlags
+                |> Seq.map(fun allowedFlag -> line.Contains allowedFlag)
+                |> Seq.contains true
+
+            nonVerboseFlag && not allowedNonVerboseFlag
+        )
+        |> Seq.length
+
+    numInvalidFlags > 0