Shell Programming and Scripting

hey all i was writing a script to

1.Rename a file upon the user's request. If the file exists, prompt the user for confirmation before renaming the file. The screen should prompt the user for
a.“Name of file you want to rename.” Use the “\c” escape character.
b.“New name of file” Use the “\c” escape character.
c.“File Exist” to avoid overriding a file.
d.“File $oldname changed to $newname”
e.“Do you want to rename another file?” If the user selects “yes” the system should refresh the screen and if the user selects “no” the system should exit to the prompt sign.
f.Refresh the screen to go back to the menu until the user selects the exit option.


so far this is what i got so far, but im stuck and i dont know how to approach the rest of it.

heres the code.

echo "**************************************"
echo "* Chuck Ingrid *"
echo "* Renaming Files Interactively *"
echo "**************************************"
echo "* 1. Select R or r to rename your file *"
echo "* 2. Select E or e to exit the screen *"
echo "******************************************"
#
echo
echo "0: exit"
echo "R or r: To rename your file
echo "E or e: Exit the screen"
echo "Enter your choice: \c"
read option
case $option in
1) echo "Enter File name to rename: \c"
read response

Were you? Or is this a homework assignment?

Why use \c? It is not supported in many shells or systems.

Use printf instead.

If you can't do better than this, you'd better take the course over.

Did it not cover while loops?

i thought "\c:" will was to allow the user or me to input the response in the same line.

yes you are right and it is supported by AIX. in other system you have to add -e option with echo

i run the program in HP version of UNix in the SH shell and the "\c" works fine and i know i have to add echo. but the problem is that im just stuck at option "b" part of the script and im good at diagramming the steps i need to write the script but when it comes to write it i dont know the proper loops to use.

It's purpose, on those systems that support it, is to suppress the newline that echo normally prints after displaying its arguments.

You cannot rely on its working, which is why it is better to use printf.

ohk i will use printf but can you review my code and tell me if it even comes close to the list of operations i want it to follow. cuz im just writing codes using a book. i am not a seasoned vet like you guys on here. i just starting operating unix last month.