Teaching myself Here Document Post: 87962

Sponsored Content

Top Forums UNIX for Dummies Questions & Answers Teaching myself Here Document Post 87962 by ericelysia on Saturday 29th of October 2005 06:26:58 PM

10-29-2005

Registered User

Teaching myself Here Document

I understand that a Here Document will redirect all of the lines between the beginning marker for the here document and the ending marker into the command specified just as if the text were coming from standard input.

I am trying to understand the Here Document with this example:

Code:

# Menu file

set -vx

clear=`tput clear`
bold=`tput bold`
bell=`tput bel`
off=`tput sgr0`

export clear bold bell off

${bold}
echo "\n\n              WELCOME TO"
echo "            MENU PROGRAM OF"
echo "         THE PHONEBOOK PROJECT \n\n"
${off}

echo "\tPress ${bold}A${off} to add information to the phonebook."
echo "\tPress ${bold}C${off} to change phonebook information."
echo "\tPress ${bold}D${off} to display phonebook information."
echo "\tPress ${bold}R${off} to remove phonebook information."
echo "\tPress ${bold}Q${off} to quit the phonebook."
read choice

${bell}
echo "\tYou have chosen $choice."

set +vx

I have attempted to make this a Here Document:

Code:

# Menu file

cat << alldone

clear=tput clear
bold=tput bold
bell=tput bel
off=tput sgr0

export clear bold bell off

${bold}
              WELCOME TO
            MENU PROGRAM OF
         THE PHONEBOOK PROJECT
$<off>


     Press ${bold}A${off} to add information to the phonebook.
     Press ${bold}C${off} to change phonebook information.
     Press ${bold}D${off} to display phonebook information.
     Press ${bold}R${off} to remove phonebook information.
     Press ${bold}Q${off} to quit the phonebook.
read choice

${bell}
You have chosen $choice.

alldone

When I execute the menu file, I am not able to input a choice. Am I missing something here?

Thanks,
Eric

ericelysia

View Public Profile for ericelysia

Find all posts by ericelysia

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Help on find a document

Hey all, I've been trying to find a document. The document is a list of all supported hardware that Solaris 7 supports. If anyone knows where this can be found thx in advanced. I've tried looking through the docs.sun.com site and can't find what I am after. It's just a list of hardware...

2. UNIX for Dummies Questions & Answers

one teaching Tip

Student have huge interest about why so many expert choose use UNIX than MS Windows. I consider that SHARE & OPEN is key point.:)

3. Shell Programming and Scripting

echo with a here-document

I do not know how valid this post is, but here it is. I was writing a script for testing some development code that I had written. It involved many echo statements to redirect the output into a log file. Given the large number of echo statements, I took to this solution cat <<EOF >>...

4. Shell Programming and Scripting

The here document <<

Hello, I want to know the use of the here document with the << operator. Tried to go through some books but the concept was not clear. Please can any1 expalin me this with a simple example. Thanks, Rahul.

5. Shell Programming and Scripting

Document

Plz can somebody give me the shell and perl scripting documents,i need to start the scrpts learning.now i know about the linux commands,but need help in putting the same in the scripting with do,if,while and also using diffrent commands in the scrpipts,pls help..

6. Shell Programming and Scripting

Here document inside a here document?

Can we use a here document inside a here document? Something like this ssh user@remotehost << REMOTE sudo vserver vsernamename enter << VSERVER perform actions on vserver. VSERVER REMOTE

7. UNIX for Dummies Questions & Answers

Teaching myself Unix - Need websites and other pointers

Hi, I am new to Unix. I've started with a book "Unix for Dummies". Please help, any websites with extensive amount of practice exercises are needed. I need to practice! Also I would appreciate any books that are good for beginners. Thanks to all!

8. Homework & Coursework Questions

HTML document

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: <HTML><HEAD><TITLE>Personal Web Page</TITLE></HEAD> <BODY BGCOLOR="WHITE"><H3> <CENTER>My Personal Page<HR>...

9. Shell Programming and Scripting

Fetch the value from Here Document

I have code like var="1" echo << EOF export `var="2"` EOF echo $var The value of var is printed here is 1 but it should be 2 Any error there? ---------- Post updated at 11:44 AM ---------- Previous update was at 10:33 AM ---------- Also tried var="1" echo var << EOF echo...

LEARN ABOUT DEBIAN

imon

IMON(1) 						    Linux System Administration 						   IMON(1)

NAME

       imon - watch ISDN activities

SYNOPSIS

       imon [ -q] [-p phonebook]

DESCRIPTION

       imon is a ncurses based utility for watching ISDN activity.

OPTIONS

       -q   If	this  option  is  given,  the facility of terminatig the program by pressing 'Q' is disabled and the signals SIGHUP and SIGINT are
	    caught.  This option is intended for starting imon from within an rc script with redirecting input/output  to  some  otherwise  unused
	    virtual console at boot time.

       -p phonebook
	    is	used to supply imon with a phonebook file. The format of a phonebook file is very simple: Every line has two elements separated by
	    a TAB.  The first element is a phone number which can contain wildcards.  The second element is a descriptive string. For each  active
	    connection, this string is shown instead the phone number. Pressing 'S' toggles between display of strings and phone numbers. Pressing
	    'R' rereads the phonebook file in case of changes during program execution.

AUTHOR

       Fritz Elfert <fritz@isdn4linux.de>

SEE ALSO

       ttyI(4), isdnctrl(8), isdninfo(4).

isdn4k-utils-3.25						    1999/09/06								   IMON(1)