Help with a bash script

linx win · 01-18-2006, 09:34 AM

I am trying to make a bash script to let the user to configure the proxy for the Konsole using the KDE proxy configarator gui to be able to use wget and apt-get. I did the following:

Code:

---------------- start -------------------------
#!/bin/bash
## 1st will open KDE proxy configarator
kcmshell proxy 
## 2nd will copy the settings to /etc/apt/apt.conf
CONF_DIR=~/.kde/share/config
ftp_Prox=`grep "^ftpProxy=" "${CONF_DIR}/kioslaverc" | sed -e 's/.*=\(.*\)/\1/'`
htp_Prox=`grep "^httpProxy=" "${CONF_DIR}/kioslaverc" | sed -e 's/.*=\(.*\)/\1/'`
htps_Prox=`grep "^httpsProxy=" "${CONF_DIR}/kioslaverc" | sed -e 's/.*=\(.*\)/\1/'`
 
 echo "APT::Cache-Limit 20000000;" > /etc/apt/apt.conf
 echo "Apt::Get::Purge;" >> /etc/apt/apt.conf
 echo "Acquire{" >> /etc/apt/apt.conf
 echo 'FTP::proxy' '"'$ftp_Prox'"'';' >> /etc/apt/apt.conf
 echo 'HTTP::proxy' '"'$htp_Prox'"'';' >> /etc/apt/apt.conf
 echo 'HTTPS::proxy' '"'$htps_Prox'"'';' >> /etc/apt/apt.conf
 echo "}" >> /etc/apt/apt.conf 
------------------- End ---------------------------

But the problem, the file I am trying to write the setting in (/etc/apt/apt.conf) requires root prevlige. Is there a way to aquire such prevlige using Xdialoge or kdialoge? I know how to do it from command line as follows:

Code:

if [ $(id -u) != 0 ]; then
	echo You have to be root to run this script.
	exec su -c "$0" || echo authorization failed. && exit 1
fi

but I do not want the user to see the command line.

scuzzman · 01-18-2006, 09:51 AM

Your answer is sudo. For more information:

Code:

man sudo

That said, you really should enclose your code in [ code]...[ /code] markup. This way it's displayed a lot more legibly.

linx win · 01-18-2006, 02:30 PM

scuzzman

Thanks for reply. I am sorry for the miss up in the code. I revised it as you suggested.

Can you elaborate on how to use sudo in this case. My debian system does not allow normal users to do "sudo".

Another option is su command. Is there a way to pass a user name and password to su command? If there is I can use kdialog to ask the user to provide the root password and pass it on to the su command.

chrism01 · 01-18-2006, 07:23 PM

Did you read the man page for sudo? The whole pt of the sudo tool is to allow (enable) named user(s) to do specified cmds above their normal privilege.

linx win · 01-19-2006, 12:26 AM

Yes, I read it but when I use sudo it just tells me: "knoppix is not in the sudoers file. This incident will be reported."

kshkid · 01-19-2006, 08:21 AM

you need to edit the sudoers file.

if it is a freebsd or solaris distribution then it is /usr/local/etc/sudoers

openbsd /etc/sudoers (not sure of others)

always use the visudo to edit sudoers file.

sudoers file is of the following format.

Code:

user host=command

if you want to give permission to run all the commands on all the servers for a particular user
then

user ALL=ALL

scuzzman · 01-19-2006, 12:08 PM

As for your request for a solution involving 'su' you'd use:

Code:

su - root -c "command"

It will automatically prompt for the root password.

linx win · 01-19-2006, 04:10 PM

Thanks for help. I will try.