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Problem with my bash script

I have a script in which some html code is created with information about my system. What I would like is to have the html code automatically written to a file.
Here is the script

Code:

#!/bin/bash

# make_page - A script to produce an HTML file



##### Constants



TITLE="My System Information for $HOSTNAME"

RIGHT_NOW=$(date +"%x %r %Z")

TIME_STAMP="Updated on $RIGHT_NOW by $USER"



##### Functions



function system_info

{

        echo "<h2>System release info</h2>"

        echo "<p>Function not yet implremented</p>"

}



function show_uptime

{

        echo "<h2>System uptime</h2>"

        echo "<pre>"

        uptime

        echo "</pre>"

}



function drive_space

{

        echo "<h2>Filesystem space</h2>"

        echo "<pre>"

        df

        echo "</pre>"

}



function home_space

{

        # Only the superuser can get this information



        if [ "$(id -u)" = "0" ]; then

                echo "<h2>Home directory space by user</h2>"

                echo "<pre>"

                echo "Bytes Directory"

                du -s /home/* | sort -nr

                echo "</pre>"

        fi



        # end of the home_space

}





cat <<- _EOF_

        <HTML>

        <HEAD>

                <TITLE>

                $TITLE

                </TITLE>

        </HEAD>



        <BODY>

                <H1>$TITLE </H1>

                <P>$TIME_STAMP</P>

                $(system_info)

                $(show_uptime)

                $(drive_space)

                $(home_space)

        </BODY>

        </HTML>

_EOF_

I tried putting the section of the script that contains the html code starting at "cat <<- all the way to _EOF_" in a function first and then calling that function to write it's contents into a file and when I couldn't get that to work I tried making the html code a variable and then writing that into a file and was not successful.

I can do what I want outside of the script: make_page > page.html
I just can't do it within the script.

If you're trying to have your script write this to a file "page.html" rather than having to re-direct the output of the script. Try the following.

Code:

cat <<- _EOF_

        <HTML>

        <HEAD>

                <TITLE>

                $TITLE

                </TITLE>

        </HEAD>



        <BODY>

                <H1>$TITLE </H1>

                <P>$TIME_STAMP</P>

                $(system_info)

                $(show_uptime)

                $(drive_space)

                $(home_space)

        </BODY>

        </HTML>

_EOF_

With....

Code:

echo "

        <HTML>

        <HEAD>

                <TITLE>

                $TITLE

                </TITLE>

        </HEAD>



        <BODY>

                <H1>$TITLE </H1>

                <P>$TIME_STAMP</P>

                $(system_info)

                $(show_uptime)

                $(drive_space)

                $(home_space)

        </BODY>

        </HTML>

" > page.html

hmmm ... that would seem to be an odd approach kinneyd when a here document is all about redirection and capturing what you want :)

@OP it generally helps if you tell us 'what' did not work about your attempts as it may be something simple :)

Here are 2 options you could use (I will only show additional code):

Option 1:

Code:

create_page()

{

        cat <<-_EOF_

        <HTML>

        <HEAD>

                <TITLE>

                $TITLE

                </TITLE>

        </HEAD>



        <BODY>

                <H1>$TITLE </H1>

                <P>$TIME_STAMP</P>

                $(system_info)

                $(show_uptime)

                $(drive_space)

                $(home_space)

        </BODY>

        </HTML>

_EOF_

}



create_page > page.html

Option 2:

Code:

create_page()

{

        cat > "$1" <<-_EOF_

        <HTML>

        <HEAD>

                <TITLE>

                $TITLE

                </TITLE>

        </HEAD>



        <BODY>

                <H1>$TITLE </H1>

                <P>$TIME_STAMP</P>

                $(system_info)

                $(show_uptime)

                $(drive_space)

                $(home_space)

        </BODY>

        </HTML>

_EOF_

}



create_page page2.html

See how that goes :)