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HI guys i have a question.
Question 1: how do i modify a particular string?
e.g

echo "Please enter Book Title: "
read a
echo "Please enter Author: "
read b
if [[ $(grep "^$a:$b"...

Hi guys, im currently doing a library database program, and i need help for the following commands

my library.txt is

Google:Harry:45.00:50:100

This is my code
echo "Please enter Title"
...

Hi, That worked, thanks!

I have 3 questions
Question 1 how can i set up such a way that when i input a,b, it only prints out that line ( kinda like search function)

e.g
username.txt
...

HI All, I need to search for a particular pattern input by the user in order to delete the line. My username.txt has

username@email.com:John:149.0.3.4:1
username1@email.com:Harry:149.0.3.4:1...