add sh and zsh, add Linux's pwsh, always quote default shell

README.md

@@ -273,7 +273,9 @@ Currently provided `Fli.Shells`:
 - `PS` runs `powershell.exe -Command ...`
 - `PWSH` runs `pwsh.exe -Command ...`
 - `WSL` runs `wsl.exe -- ...`
+- `SH` runs `sh -c ...`
 - `BASH` runs `bash -c ...`
+- `ZSH` runs `zsh -c ...`
 - `CUSTOM (shell: string * flag: string)` runs the specified `shell` with the specified starting argument (`flag`)
 
 Provided `Fli.Outputs`:
@@ -291,4 +293,4 @@ Provided `Fli.WindowStyle`:
 Open an [issue](https://github.com/CaptnCodr/Fli/issues) or start a [discussion](https://github.com/CaptnCodr/Fli/discussions).
 
 ### Inspiration
-Use CE's for CLI commands came in mind while using [FsHttp](https://github.com/fsprojects/FsHttp).
+Use CE's for CLI commands came in mind while using [FsHttp](https://github.com/fsprojects/FsHttp).

src/Fli.Tests/ShellContext/ShellCommandExecuteTests.fs

@@ -62,7 +62,7 @@ let ``Hello World with CUSTOM shell`` () =
     else
         cli {
             Shell(CUSTOM("bash", "-c"))
-            Command "\"echo Hello World!\""
+            Command "echo Hello World!"
         }
         |> Command.execute
         |> Output.toText
@@ -187,6 +187,19 @@ let ``Hello World with PWSH`` () =
     else
         Assert.Pass()
 
+[<Test>]
+let ``Hello World with SH`` () =
+    if OperatingSystem.IsWindows() |> not then
+        cli {
+            Shell SH
+            Command "echo Hello World!"
+        }
+        |> Command.execute
+        |> Output.toText
+        |> should equal "Hello World!"
+    else
+        Assert.Pass()
+
 [<Test>]
 let ``Hello World with BASH`` () =
     if OperatingSystem.IsWindows() |> not then
@@ -200,6 +213,19 @@ let ``Hello World with BASH`` () =
     else
         Assert.Pass()
 
+[<Test>]
+let ``Hello World with ZSH`` () =
+    if OperatingSystem.IsMacOS() then
+        cli {
+            Shell ZSH
+            Command "echo Hello World!"
+        }
+        |> Command.execute
+        |> Output.toText
+        |> should equal "Hello World!"
+    else
+        Assert.Pass()
+
 [<Test>]
 let ``Input text in BASH`` () =
     if OperatingSystem.IsWindows() |> not then

src/Fli.Tests/ShellContext/ShellCommandToStringTests.fs

@@ -3,6 +3,7 @@
 open NUnit.Framework
 open FsUnit
 open Fli
+open System
 
 
 [<Test>]
@@ -35,12 +36,20 @@ let ``PS command toString returns full line`` () =
 
 [<Test>]
 let ``PWSH command toString returns full line`` () =
-    cli {
-        Shell PWSH
-        Command "Write-Host Hello World!"
-    }
-    |> Command.toString
-    |> should equal "pwsh.exe -Command Write-Host Hello World!"
+    if OperatingSystem.IsWindows() then
+        cli {
+            Shell PWSH
+            Command "Write-Host Hello World!"
+        }
+        |> Command.toString
+        |> should equal "pwsh.exe -Command Write-Host Hello World!"
+    else
+        cli {
+            Shell PWSH
+            Command "Write-Host Hello World!"
+        }
+        |> Command.toString
+        |> should equal "pwsh -Command Write-Host Hello World!"
 
 [<Test>]
 let ``WSL command toString returns full line`` () =

src/Fli/Command.fs

@@ -13,13 +13,21 @@ module Command =
     open System.Runtime.InteropServices
     open System.Threading
 
+    let private getAvailablePwshExe () =
+        if RuntimeInformation.IsOSPlatform(OSPlatform.Windows) then
+            "pwsh.exe"
+        else
+            "pwsh"
+
     let private shellToProcess (shell: Shells) (input: string option) =
         match shell with
         | CMD -> "cmd.exe", (if input.IsNone then "/c" else "/k")
         | PS -> "powershell.exe", "-Command"
-        | PWSH -> "pwsh.exe", "-Command"
+        | PWSH -> getAvailablePwshExe (), "-Command"
         | WSL -> "wsl.exe", "--"
+        | SH -> "sh", "-c"
         | BASH -> "bash", "-c"
+        | ZSH -> "zsh", "-c"
         | CUSTOM(shell, flag) -> shell, flag
 
     let private toOption =
@@ -200,9 +208,16 @@ module Command =
         cts.Token
 
     let private quoteBashCommand (context: ShellContext) =
-        match context.config.Shell with
-        | Shells.BASH -> context.config.Command |> Option.defaultValue "" |> (fun s -> $"\"{s}\"")
-        | _ -> context.config.Command |> Option.defaultValue ""
+        let noQuoteNeeded = [|
+            Shells.CMD
+            Shells.PWSH
+            Shells.PS
+            Shells.WSL
+        |]
+
+        match Array.contains context.config.Shell noQuoteNeeded with
+        | true -> context.config.Command |> Option.defaultValue ""
+        | false -> context.config.Command |> Option.defaultValue "" |> (fun s -> $"\"{s}\"")
 
     let private getProcessWindowStyle (windowStyle: WindowStyle) =
         match windowStyle with

src/Fli/Domain.fs

@@ -25,7 +25,9 @@ module Domain =
         | PS
         | PWSH
         | WSL
+        | SH
         | BASH
+        | ZSH
         | CUSTOM of shell: string * flag: string
 
     and Outputs =