diff --git a/shellnotes.sh b/shellnotes.sh
index 90a4514..86d0e86 100644
--- a/shellnotes.sh
+++ b/shellnotes.sh
@@ -1,4 +1,4 @@
-
+#!/bin/zsh
 
 
 #The first line is the user's default shell found during installation process.
@@ -21,6 +21,8 @@ DIR="$(pwd)"
 . ~/.shellnotes/util/findmisplacednote.sh
 . ~/.shellnotes/util/renamenote.sh
 . ~/.shellnotes/util/noteinfo.sh
+. ~/.shellnotes/util/notegrep.sh
+
 
 
 . ~/.shellnotes/util/shellnotes.sh
diff --git a/util/notegrep.sh b/util/notegrep.sh
new file mode 100644
index 0000000..064bdbd
--- /dev/null
+++ b/util/notegrep.sh
@@ -0,0 +1,96 @@
+:<<'info'
+shellnotes - notegrep.sh
+(C) Dimitris Marakomihelakis
+Released under the "All rights reserved" category. See the RIGHTS.txt file
+in /docs/github/ for its full text.
+info
+
+
+export GREP_OPTIONS='--color=auto' 
+
+
+:<<'comment'
+
+Here, the color parameter is specified in a grep-specific environment variable.
+Then, you don't have to enter it in the command line again.
+The "auto" option is selected in order to colorize the output of the "grep"
+command every time it is called, unless the output is piped to a command, or 
+redirected to a file.
+
+comment
+
+
+export GREP_COLORS='ms=01;33'
+
+
+:<<'comment'
+
+Now, change the highlight color of grep by using an environment variable, GREP_COLORS.
+An empty string or 0 resets all text styling and resets both colors to the defaults but
+does not reset the font to the default. Some options/examples are:
+
+┏━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━
+┃ ### ┃ GNOME Terminal          ┃ xterm                   ┃ non-GUI TTY           ┃
+┡━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━
+│     │ «reset style+colors»    │ «reset style+colors»    │ «reset style+colors»  │
+│   0 │ «reset style+colors»    │ «reset style+colors»    │ «reset style+colors»  │
+├─────┼─────────────────────────┼─────────────────────────┼─────│
+│   1 │ +bold, +brighter color  │ +bold, +brighter color  │ +brighter color,      │
+│     │                         │                         │   -forced grey        │
+│   2 │ +fainter color          │ +fainter color          │ +forced grey          │
+│   3 │ +italic                 │ +italic                 │ +forced green         │
+│     │                         │                         │   ● overrides 2 and 4 │
+│   4 │ +underline              │ +underline              │ +forced cyan          │
+│     │                         │                         │   ● overrides 2       │
+│   5 │ «no effect»             │ +blink                  │ «no effect»           │
+│   7 │ +invert colors          │ +invert colors          │ +invert colors        │
+│   8 │ +invisible              │ +invisible              │ «no effect»           │
+│     │                         │   ● underline appears   │                       │
+│   9 │ +strikethrough          │ +strikethrough          │ «no effect»           │
+├────┼───────────────────────────────────────────────────────────┤                                             Source: https://askubuntu.com/questions/1042234/modifying-the-color-of-grep
+│  21 │ -bold, -brighter color, │ +double underline       │ -brighter color,      │
+│     │   -fainter color        ├     -forced grey        │                       │
+│  22 │ -bold, -brighter color, │ -bold, -brighter color, │ -brighter color,      │
+│     │   -fainter color        │   -fainter color        │   -forced grey        │
+│  23 │ -italic                 │ -italic                 │ -forced green         │
+│  24 │ -underline              │ -underline,             │ -forced cyan          │
+│     │                         │   -double underline     │                       │
+│  25 │ «no effect»             │ -blink                  │ «no effect»           │
+│  27 │ -invert colors          │ -invert colors          │ -invert colors        │
+│  28 │ -invisible              │ -invisible              │ «no effect»           │
+│  29 │ -strikethrough          │ -strikethrough          │ «no effect»           │
+└─────┴─────────────────────────┴─────────────────────────┴──────
+
+In this example, the matching regex is going to be displayed as bold yellow (in most terminals).
+
+comment
+
+
+
+function notegrep() {
+    if [ $# -eq 0 ]; then
+		echo -n "Enter note name: " && read notename
+		echo -n "Enter regex: " && read find
+	else
+		notename=$1
+        find=$2
+	fi
+
+	if [ -z $notename ]; then
+		echo "Invalid input."
+		return 0
+
+    elif [ -z $find ]; then
+        echo "No key word or character given."
+        return 0
+    fi
+
+    if [ -e ${DEFAULT_PATH}/${notename} ]; then
+        cd $DEFAULT_PATH
+        grep $find $notename
+    else
+        echo "This note doesn't exist in $DEFAULT_PATH."
+    fi
+
+ cd $DIR
+}
\ No newline at end of file