rewrote mark in c.

mark

@@ -1,54 +0,0 @@
-#!/bin/bash
-
-BOOKMARKS_FILE=~/.bookmarks
-
-# Catch any invalid input.
-if [[ $# -gt 1 ]]; then
-    echo "Improper usage: mark { -ls | -rm [ keyword ] }"
-    echo "      eg. mark"
-    echo "      eg. mark -ls"
-    echo "      eg. mark -rm portfolio"
-    echo "      eg. mark -h"
-    echo "      eg. mark --help"
-
-    exit
-
-# Help page
-elif [[ $1 == "-h" || $1 == "--help" ]]; then
-    echo "\nCreate and manage persistent bookmarks inside of terminal sessions.\n"
-    echo "Usage:"
-    echo "      mark"
-    echo "      mark -ls"
-    echo "          eg. run main"
-    echo "      mark -rm [ keyword ]"
-    echo "          eg. mark -rm portfolio"
-    echo "      mark -h"
-    echo "      mark --help"
-
-    exit
-
-# Add a bookmark to the bookmarks file.
-elif [ $# == 0 ]; then
-    echo $(pwd) >> $BOOKMARKS_FILE
-
-# List bookmarks stored in the bookmarks file.
-elif [ "$1" == "-ls" ]; then
-    echo "Bookmarks:"
-    cat $BOOKMARKS_FILE
-
-# Remove a bookmark stored in the bookmarks file.
-elif [ "$1" == "-rm" ]; then
-    # The user is trying to remove a single bookmark
-    # Check if the bookmark exists
-    if [ $(grep -c "$2" $BOOKMARKS_FILE) -gt 0 ]; then
-
-      # Remove the bookmark
-      sed -i .bak $2d $BOOKMARKS_FILE
-    else
-      echo "Bookmark not found"
-    fi
-
-# Invalid argument, display an error message
-else
-    echo "Usage: mark [-ls] [-rm [number | number TO number]]"
-fi