From 8b43405a3178be1a9a5106fdbf034a4d18268329 Mon Sep 17 00:00:00 2001
From: "U-GEMALTO\\10056220" <10056220@FHMLAP-62YYK12.gemalto.com>
Date: Thu, 17 Oct 2019 11:05:07 +0100
Subject: [PATCH] Added colored grep and fixed a bug

This commit adds the ability to grep for something but instead of displaying
just the matching lines it shows all the lines plus the matching ones colored in red.

Also fixed a problem using a log name with multiple words.
---
 tail.ps1 | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/tail.ps1 b/tail.ps1
index feb074a..c944cd1 100644
--- a/tail.ps1
+++ b/tail.ps1
@@ -6,12 +6,14 @@
 #
 # History
 # 2013/09/17	: Created
+# 2019/10/17	: Modified
 #
 param(
 	[string]$log = "Security",
 	[string]$eventid = "",
 	[string]$pattern = "",
 	[switch]$details = $false,
+	[switch]$colour  = $false,
 	[switch]$verbose = $false,
 	[switch]$help = $false
 )
@@ -21,14 +23,22 @@ if ($help -eq $true)
 	Write-Host "Usage: tail.ps1 [-log=<eventlog>,<eventlog>,...]
                 [-eventid=<id>,<id>,...]
                 [-pattern=<regex>]
+                [-colour]
                 [-details]
                 [-verbose]
-                [-help]"
+                [-help]
+				
+                e.g. 
+                tail -log ""My Service"" => reads new messages from My Service event source. C3 Service is the default.
+                tail -pattern ERROR => shows only the lines matching the word ""ERROR""
+                tail -pattern ""New ERROR"" => shows only the lines matching ""New ERROR""
+                tail -pattern word_I_want_to_look_for -colour => shows all the lines and the matching ones in red
+                "
 	exit
 }
 
-$eventlogs = $log.split(" ")
-$eventids = $eventid.split(" ")
+$eventlogs = $log.split(",")
+$eventids = $eventid.split(",")
 $idx = 0
 $old = new-object object[] 10
 $new = new-object object[] 10
@@ -71,12 +81,19 @@ while ($true)
             }
           }
           else {
-            if ($line.message -match $pattern) {
-              if ($details -eq $false) {
+            if ($colour) {
+              if ($line.message -match $pattern) {
+                [Console]::ForegroundColor = "red"
                 $line
+                [Console]::ResetColor()
               }
               else {
-                $line | format-list
+                $line
+              }
+            }
+            else {
+              if ($line.message -match $pattern) {
+                $line
               }
             }
           }