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Full Discussion: Debugging a beginner shell script...
Top Forums Shell Programming and Scripting Debugging a beginner shell script... Post 302392248 by brokepunk on Wednesday 3rd of February 2010 06:56:10 PM
Old 02-03-2010
Thank you...
You were correct Scrutinizer, it was the spacing. I did read the error message but could not make sense of it until the folly of my ways was made clear to me...
So that part of the script is now fully functional but I cannot get permissions on the .gvfs to be read from superuser. I have read that this is a fuse mount point, and therefor not located in /etc/fstab. so When I unmount it, chmod and try to mount again... it bombs out not knowing where to look. There are a few more chapters on the tutorial I am working on, but before I complete them, I would like o understand my current issue. My first post got me scolded by a mod for not using correct code tags, so I am going to try this again with the entire script.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Code:
#!/bin/bash

# systeminfo - A script to produce an HTML file with system info.

##### Constants

TITLE="System Information for $HOSTNAME"
RIGHT_NOW=$(date +"%x %r %Z")
TIME_STAMP="Updated on $RIGHT_NOW by $USER"

##### Functions

function press_enter
{
        echo ""
        echo -n "Press Enter to continue"
        read
        clear
}

function system_info
{
     echo "<h2>System release info</h2>"
     echo "<p>Function not yet implimented</p>"

}    # end of system_info

function show_uptime
{
     echo "<h2>System Uptime</h2>"
     echo "<pre>"
     uptime
     echo "</pre>"

}    # end of show_uptime

function drive_space
{
     echo "<h2>Filesystem space</h2>"
     echo "<pre>"
     df
     echo "</pre>"

}    # end of drive_space

# this is the function that requires superuser. I changed the id to 1000 just to see results and it worked, but no dice with root.

function home_space
{
 # Only 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 home space

function write_page
{
    cat <<- _EOF_
    <html>
        <head>
        <center>
        <title>$TITLE</title>
        </center>
        </head>
        <body>
        <center>
        <h1>$TITLE</h1>
        <p>$TIME_STAMP</p>
        $(system_info)
        $(show_uptime)
        <table border="1">
        <tr>
        <td>
        $(drive_space)
        </td>
        <td>
        $(home_space)
        </td>
        </table>
        </center>
        </body>
    </html>
_EOF_

}

function usage
{
    echo "usage: systeminfo [[[-f file ] [-i]] | [-h]]"
}

press_enter

##### Main

interactive=
filename=~/system_page.html

while [ "$1" != "" ]; do
    case $1 in
        -f | --file )           shift
                                filename=$1
                                ;;
        -i | --interactive )    interactive=1
                                ;;
        -h | --help )           usage
                                exit
                                ;;
        * )                     usage
                                exit 1
    esac
    shift
done

if [ "$interactive" = "1" ]; then
        response=

        echo -n "Enter name of output file [$filename] > "
        read response
        if [ -n "$response" ]; then
             filename=$response
        fi


 if [ -f $filename ]; then
                echo -n "Output file exists. Overwrite? (y/n) > "
                read response
                if [ "$response" != "y" ]; then
                echo "Exiting Program"
                exit 1
        fi

fi
fi


# Write page

 write_page > $filename

++++++++++++++++++++++++++++++++++++++++++++++++++++++=

All help will be greatly appreciated.
 

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