tisaconundrum2

#!/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,