Merge pull request #54 from marchampson/feature/grep-option

Added grep feature and updated readme

README.md

@@ -86,6 +86,12 @@ This can be useful if you're only interested in the last log entry when debuggin
 php artisan tail --clear
 ```
 
+Should you wish to filter the log to return only certain keywords then you can also use the grep feature.
+
+```bash
+php artisan tail --grep="keywords"
+```
+
 ### Tailing remote logs
 
 To tail remote logs, you must first specify values for `host`, `user` and `log_directory` keys of an environment in the `tail` config file.

src/TailCommand.php

@@ -11,7 +11,8 @@ class TailCommand extends Command
 {
     protected $signature = 'tail {environment?}
                             {--lines=0 : Output the last number of lines}
-                            {--clear : Clear the terminal screen}';
+                            {--clear : Clear the terminal screen}
+                            {--grep="" : Grep specified string}';
 
     protected $description = 'Tail the latest logfile';
 
@@ -79,6 +80,8 @@ protected function getEnvironmentConfiguration(string $environment): array
 
     public function getTailCommand(): string
     {
-        return 'tail -f -n '.$this->option('lines').' "`ls -t | head -1`"';
+        $grep = ($this->option('grep')) ? ' | grep "' . $this->option('grep').'"' : '';
+
+        return 'tail -f -n '.$this->option('lines').' "`ls -t | head -1`"' . $grep;
     }
 }