fix: rename --parallel option to --threads for clarity

Closes #80.

README.md

@@ -76,12 +76,13 @@ hostpatrol compile --host my-host-1 --host my-host-2 > /tmp/hostpatrol-report.js
 This command connects to hosts in parallel and ignores all failed
 hosts by reporting errors in the output.
 
-> If you want to change the number of concurrent tasks, do so with
-> `--parallel` option:
+> If you want to change the number of maximum number of threads to use
+> for concurrent patrol tasks, do so with `--threads` option that
+> defaults to `4` otherwise:
 >
 >
 > ```sh
-> hostpatrol compile --parallel 10 --host my-host-1 --host my-host-2 ... > /tmp/hostpatrol-report.json
+> hostpatrol compile --threads 10 --host my-host-1 --host my-host-2 ... > /tmp/hostpatrol-report.json
 > ```
 
 Alternatively, you can use a configuration file which has additional

src/HostPatrol/Cli.hs

@@ -64,18 +64,18 @@ commandCompile = OA.hsubparser (OA.command "compile" (OA.info parser infomod) <>
       doCompile
         <$> OA.optional (OA.strOption (OA.short 'c' <> OA.long "config" <> OA.action "file" <> OA.help "Path to the configuration file."))
         <*> OA.many (OA.strOption (OA.short 'h' <> OA.long "host" <> OA.help "Remote host (in SSH destination format)."))
-        <*> OA.option OA.auto (OA.short 'p' <> OA.long "parallel" <> OA.value 4 <> OA.showDefault <> OA.help "Number of hosts to hit concurrently.")
+        <*> OA.option OA.auto (OA.short 't' <> OA.long "threads" <> OA.value 4 <> OA.showDefault <> OA.help "Maximum number of threads to use for concurrent patrols.")
 
 
 -- | @compile@ CLI command program.
 doCompile :: Maybe FilePath -> [T.Text] -> Int -> IO ExitCode
-doCompile cpath dests par = do
+doCompile cpath dests threads = do
   baseConfig <- maybe (pure (Config.Config [] [])) Config.readConfigFile cpath
   let config =
         baseConfig
           { Config._configHosts = Config._configHosts baseConfig <> fmap _mkHost dests
           }
-  res <- runExceptT (compileReport par config)
+  res <- runExceptT (compileReport threads config)
   case res of
     Left err -> BLC.hPutStrLn stderr (Aeson.encode err) >> pure (ExitFailure 1)
     Right sr -> BLC.putStrLn (Aeson.encode sr) >> pure ExitSuccess

website/src/app/page.tsx

@@ -90,10 +90,13 @@ hosts:
               This command connects to hosts in parallel and ignores all failed hosts by reporting errors in the output.
             </p>
 
-            <p>If you want to change the number of concurrent tasks, do so with `--parallel` option:</p>
+            <p>
+              If you want to change the number of maximum number of threads to use for concurrent patrol tasks, do so
+              with `--threads` option that defaults to `4` otherwise:
+            </p>
 
             <Code>
-              <pre>{`hostpatrol compile --parallel 10 --host my-host-1 --host my-host-2 ... > /tmp/hostpatrol-report.json`}</pre>
+              <pre>{`hostpatrol compile --threads 10 --host my-host-1 --host my-host-2 ... > /tmp/hostpatrol-report.json`}</pre>
             </Code>
 
             <p>