case and menus

[crownedzero]

I'm trying to make a bash menu displaying options but it contains sub menus as well. Is there anyway to add an identifier that will display with the menu?

Right now it displays

Option 1
Option 2
Option 3

I'd like to see

Main Menu
Option 1
Option 2
Option 3 etc

[crownedzero]

echo "************************************************** ******************************"
echo "* Main Menu *"
echo "* User Interface Menu *"
echo "************************************************** ******************************"


select main_menu in "Edit File" \
"User Utilities" \
"File/Directory Utilities" \
"Exit"

do
case $main_menu in "Edit File" )
;;
"User Utilities" )
clear
utilities_menu ;;
"File/Directory Utilities" )
file_dir_menu ;;
"Exit" )
break ;;
*)
echo "You must select one of the above options"
esac
done


In this case I would like the Main Menu portion to be displayed everytime; not just the menu items



************************************************** ******************************
* Main Menu *
* User Interface Menu *
************************************************** ******************************
1) Edit File 3) File/Directory Utilities
2) User Utilities 4) Exit
Please select one of the options (hit RETURN to repeat the menu):


Not just



1) Edit File 3) File/Directory Utilities
2) User Utilities 4) Exit
Please select one of the options (hit RETURN to repeat the menu):

[Vaphell]

maybe something like this:


#!/bin/bash

break_msg=false
while true
do
echo = MENU =
select option in opt1 opt2 opt3 exit
do
case $option in opt1) echo "#1 selected";;
opt2) echo "#2 selected";;
opt3) echo "#3 selected";;
exit) break_msg=true;;
esac
break
done
if $break_msg; then break; fi
done


by default select is an endless loop. Here it would be run only once and the endless part would be done by the outer while. You'd also need to differentiate between 'normal' break and the one for legit Exit option (you'd need to pass message to the outer while loop that it needs to break too)

[crownedzero]

Let me see if I'm understanding and try to expand on what you've said...

so in the case of 4) Exit have it set a parameter to whatever and check in the conditional statement to exit the script?

[Vaphell]

i updated my post: the code went from 'raw draft' to 'now working in practice'. And indeed some parameter needs to be set to trigger the break.

[crownedzero]

main_menu_function()
{
while true
do
echo "************************************************** ******************************"
echo "* Main Menu *"
echo "* User Interface Menu *"
echo "************************************************** ******************************"

select main_menu in "Edit File" \
"User Utilities" \
"File/Directory Utilities" \
"Exit"
do
case $main_menu in "Edit File" )
edit_file_function ;;
"User Utilities" )
utility_menu_function ;;
"File/Directory Utilities" )
file_dir_menu_function ;;
"Exit" )
exit_status=true
break ;;
*) echo "You must select one of the above options"
esac
break
done
if [ $exit_status ]; then
break
fi
done
}


Think I got it, thanks!

I'm assuming this will translate to a submenu as well or would it need to be modified?

Scratch that just use a different break param and it works great thanks =)

[crownedzero]

Ok so here goes, I'm making a menu driven program for a project and I'm looking for feedback. I still need to tighten up the error handling (if exists etc.) but I welcome any feedback. Please let me know what you might think.



# Beginning of FUNCTIONS
main_menu_function()
{
while true
do
clear
echo "************************************************** ******************************"
echo "* Main Menu *"
echo "* User Interface Menu *"
echo "************************************************** ******************************"

select main_menu in "Edit File" \
"User Utilities" \
"File/Directory Utilities" \
"Exit"
do
case $main_menu in "Edit File" )
edit_file_function ;;
"User Utilities" )
utility_menu_function ;;
"File/Directory Utilities" )
file_dir_menu_function ;;
"Exit" )
main_break=true
break ;;
*) echo "You must select one of the above options"
esac
break
done
if [ $main_break ]; then
break
fi
done
}
utility_menu_function()
{
while true
do
clear
echo "************************************************** ******************************"
echo "* Utilities *"
echo "************************************************** ******************************"

select utility_menu in "Change Password" \
"Display Date and Time" \
"Display WHO Information" \
"Return to Main Menu"
do
case $utility_menu in "Change Password" )
change_passwd_function ;;
"Display Date and Time" )
display_date_time_function ;;
"Display WHO Information" )
display_who_info_function ;;
"Return to Main Menu" )
utility_break=true
break ;;
*) echo "You must select one of the above options"
esac
break
done
if [ $utility_break ]; then
break
fi
done
}
file_dir_menu_function()
{
while true
do
clear
echo "************************************************** ******************************"
echo "* File/Directory Menu *"
echo "************************************************** ******************************"

select file_dir_menu in "List Files and Directories" \
"Create a DIR" \
"Remove a DIR" \
"Remove a FILE" \
"Rename(MOVE) a FILE" \
"Copy a FILE" \
"Return to Main Menu"
do
case $file_dir_menu in "List Files and Directories" )
list_file_dir_function ;;
"Create a DIR" )
create_dir_function ;;
"Remove a DIR" )
remove_dir_function ;;
"Remove a FILE" )
remove_file_function ;;
"Rename(MOVE) a FILE" )
rename_file_function ;;
"Copy a FILE" )
copy_file_function ;;
"Return to Main Menu" )
file_dir_break=true
break ;;
*) echo "You must select one of the above options"
esac
break
done
if [ $file_dir_break ]; then
break
fi
done
}
edit_file_function()
{
clear
echo "************************************************** ******************************"
echo "* VI File Editor *"
echo "************************************************** ******************************"
sleep .5

echo -e "Please enter the file you'd like to edit using the FULL PATH"
echo "If the file does not exist it will be created or [RETURN] to open a new file"
read edit_file

if [ -z $edit_file ]; then
echo "Are you sure you want to open a blank file?"
echo "'No' to escape, [RETURN] to continue"
read edit_confirm
if [ -z $edit_confirm ]; then
vi
elif [ $edit_confirm == "No" -o "no" ]; then
break
else
echo "Could not understand your response, exiting..."
sleep .5
break
fi
check_file_function $edit_file
edit_exists=$?
if [ $edit_exists -eq 2 ]; then
echo "Could not locate the file, would you like to create it?."
echo "'No' to escape, [RETURN] to continue"
read edit_confirm
if [ -z $edit_confirm ]; then
vi
elif [ $edit_confirm == "No" -o "no" ]; then
break
else
echo "Could not understand your response, exiting..."
break
fi
break
elif [ $edit_exists -eq 1 ]; then
vi $edit_file
else
echo "Could not understand your response, exiting..."
break
fi
fi
}
change_passwd_function()
{
clear
echo "************************************************** ******************************"
echo "* Password Info and Change *"
echo "************************************************** ******************************"
sleep .5

clear
echo -e "Are you sure you want to change your password?"
echo -e "[RETURN] to go back, 'Yes' to continue"
read pass_choice

if [ -z $pass_choice ]; then
break
elif [ $pass_choice == "Yes" ] || [ $pass_choice == "yes" ]; then
clear
passwd
else
echo "Could not understand your response, exiting..."
sleep .5
break
fi
}
display_date_time_function()
{
clear
echo "************************************************** ******************************"
echo "* Date and Time Info *"
echo "************************************************** ******************************"
sleep .5

date
echo -e "\n"
cal
echo -e "\nYou'll be returned to the menu in 5 seconds\n"
sleep 5

}
display_who_info_function()
{
clear
echo "************************************************** ******************************"
echo "* WHO Info *"
echo "************************************************** ******************************"

who -a

sleep 5
echo -e "\nYou'll be returned to the menu in 5 seconds\n"
}
list_file_dir_function()
{
clear
echo "************************************************** ******************************"
echo "* File and Directory Listing *"
echo "************************************************** ******************************"

echo "Please enter the directory you would like information on"
echo "Use the entire path to the directory: /home/user for example"
echo "Press [RETURN] for the current directory"
read ls_dir

if [ -z $ls_dir ]; then
ls_dir=$(pwd)
clear
echo $ls_dir
ls -l $ls_dir
echo "[RETURN] to continue"
read random
elif [ -n $ls_dir ]; then
check_dir_function $ls_dir
dir_good=$?
if [ $dir_good -eq 1 ]; then
clear
echo $ls_dir
ls -l $ls_dir
echo "[RETURN] to continue"
read random

else
clear
echo "Directory does not exist or could not be found"
sleep 2
break
fi
else
clear
echo "Could not understand your response. Exiting..."
sleep 2
break
fi


}
create_dir_function()
{
clear
echo "************************************************** ******************************"
echo "* Directory Creation *"
echo "************************************************** ******************************"

echo -e "\nPlease enter the whole path to the DIR you'd like to create"
read new_dir

check_dir_function $new_dir
dir_exists=$?
if [ dir_exists = 1 ]; then
echo "This directory already exists"
else
echo "Are you sure you want to create $new_dir"
echo "[Yes] to accept, [RETURN] to skip"
read create_dir
if [ -z $create_dir ]; then
break
elif [ $create_dir == "Yes" ] || [ $create_dir == "yes" ]; then
mkdir -p $new_dir
else
echo "Could not understand your response, exiting..."
break
fi
fi

}
remove_dir_function()
{
clear
echo "************************************************** ******************************"
echo "* Directory Removal *"
echo "************************************************** ******************************"

echo -e "\nPlease enter the whole path to the DIR you'd like to remove"
read dead_dir

check_dir_function $dead_dir
dir_exists=$?
if [ dir_exists = 2 ]; then
echo "This directory does not exist"
else
echo "Are you sure you want to remove $dead_dir"
echo "[Yes] to accept, [RETURN] to skip"
read remove_dir
if [ -z $remove_dir ]; then
break
elif [ $remove_dir == "Yes" ] || [ $remove_dir == "yes" ]; then
rm -r $dead_dir
else
echo "Could not understand your response, exiting..."
break
fi
fi



}
remove_file_function()
{
clear
echo "************************************************** ******************************"
echo "* File Removal *"
echo "************************************************** ******************************"

echo -e "\nPlease enter the whole path to the FILE you'd like to remove"
read dead_file

check_file_function $dead_file
file_exists=$?
if [ $file_exists = 2 ]; then
echo "This file does not exist"
else
echo "Are you sure you want to remove $dead_file"
echo "[Yes] to accept, [RETURN] to skip"
read remove_file
if [ -z $remove_file ]; then
break
elif [ $remove_file == "Yes" ] || [ $remove_file == "yes" ]; then
rm -r $dead_file
else
echo "Could not understand your response, exiting..."
break
fi
fi



}
rename_file_function()
{
clear
echo "************************************************** ******************************"
echo "* Rename(MOVE) a FILE *"
echo "************************************************** ******************************"

echo "Please enter the FILE you'd like to rename(MOVE)"
echo "Remember to use the FULL PATH"
read old_file
check_file_function $old_file
file_exists=$?
if [ $file_exists = 1 ]; then
echo "Please enter the FILE you'd like to rename(MOVE) it to"
echo "Remember to use the FULL PATH"
read new_file
check_file_function $new_file
if [ $file_exists = 1 ]; then
echo "This file already exists, proceeding will prompt to overwrite it"
fi
else
echo "This file does not exist, or could not be found"

fi


}
copy_file_function()
{
echo "You've selected the copy file function"
}
check_dir_function()
{
dir_to_check=$1
if [ -e $1 ];then
return 1
else
return 2
fi
}
check_file_function()
{
file_to_check=$1
if [ -e $1 ]; then
return 1
else
return 2
fi
}

# End of FUNCTIONS

# Beginning of SCRIPT

#establish default prompt
PS3="Please select one of the options (hit RETURN to repeat the menu): "

clear

main_menu_function