teledir.sh

#!/bin/bash
# [ ] 1. the name or number. If it exists in the directory, then the line should be displayed.
# [ ] 2. both. The entry is displayed if it exists and is added if it doesn’t exist in the file.

# [x] 1. Assign the pathname to the file teledir.txt to a variable, say, TELEDIR.
# [x]    For example, if it is in your home directory, you’ll need to assign $HOME/teledir.txt to the variable TELEDIR
# [x] 2. Check that one or two arguments are supplied using $# and the case…esac construct.
# [x]     1. If one or two arguments are supplied, do nothing
# [x]     2. otherwise, Indicate that the usage must be in the form scriptname [name number], then exit
# [x] 3. Using the $# and the case…esac construct,
# [x]     1. If one argument is supplied,
# [x]         1. If it starts with a digit, search it in the file.
# [x]              1. If it doesn’t exist, echo that “Number doesn’t exist”
# [x]         2. If it starts with a letter (lower or uppercase), search it in the file.
# [x]              1. If it doesn’t exist, echo that “Name doesn’t exist”
# [x]     2. If two arguments are supplied, set the search_pattern to be “name: number”, and search it in the file.
# [x]         1. If it is not found, echo “Adding entry”, and append to the file/variable.
# [x]         2. Otherwise, echo that “Entry exists”


TELEDIR="./teledir.txt"

bad_input () {
  echo "Incorrect arguments"
  echo "Usage: ./teledir.sh \"John\" 123-456-7890"
  echo "Usage: ./teledir.sh 123-456-7890"
  echo "Usage: ./teledir.sh \"John\""
  exit
}

validate () {
  valid=$(grep -Ec "(${1})" $TELEDIR)
  if [[ $valid -gt '0' ]]; then
    grep -E "(${1})" $TELEDIR
  else
    echo "$2 doesn't exist"
  fi
}

one_argument () {
  num_valid=$(echo "$1" | grep -Ec "([0-9]{3}-){2}[0-9]{4}$")
  nam_valid=$(echo "$1" | grep -Ec "[a-zA-Z]+")
  
  if [[ num_valid -eq 1 ]]; then
    validate "$1" "Number"
  elif [[ nam_valid -eq 1 ]]; then
    validate "$1" "Name"
  else
    bad_input
  fi
}

two_argument () {
  valid=$(grep -Ec "(${1}): (${2})" $TELEDIR)
  if [[ $valid -eq 1 ]]; then
    echo "Entry exists"
  else
    echo "Adding Entry"
    echo "$1: $2" >> $TELEDIR
  fi
}

case $# in
  1) one_argument "$1" ;;
  2) two_argument "$1" "$2";;
  *) bad_input ;;
esac

How do you set up your code so that it reads the user's input?
Plugging in your code the way you have it now, even if I add a "read" command, only spews out what you have echoed under "bad_input"
It does not go through the rest of the script.

Honestly, I legit forgot about this code. What did throwing it through GPT do? 😂