How do i change to super user then revert back to ordinary user ,using shell script?


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How do i change to super user then revert back to ordinary user ,using shell script?
Prev   Next
# 1  
Old 06-04-2008
How do i change to super user then revert back to ordinary user ,using shell script?

Hi all,

I am trying to eject the cdrom from a livecd after certain stage...
Now assuming that it is possible to eject,please consider my issue!!!

The OS boots into a regular user by default...so i am unable to use the eject command to push out the drive...
However if i try pfexec eject it works....but then again it works only when the system is completely up and running not at some intermittent stage in the boot process.

How do i change the my id to a Superuser then execute the eject command ,then once the eject is done with, i would like to revert back to the ordinary user?
Secondly this code should be incorporated into one of the boot scripts,
So that after a certain stage during the boot, the drive automatically ejects......

How do i do it.....

PS:i urge you to consider that ejecting the media on a livecd is possible.

Thanks
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Change user passwords using shell script

Hi, I want to change the password of unix users on a number of servers.My plan was to ssh to all the servers in a shell script and use the passwd command. I tried to do so but everytime i run it i get this error. ssh -x -n -l user1 host passwd Changing password for "user1" 3004-709 Error... (3 Replies)
Discussion started by: poojabhat
3 Replies

2. Shell Programming and Scripting

Shell Script to change a user password using script

Hi Experts, I had tried to executes this script to change the user password through script: No lines in buffer #!/bin/ksh cat /etc/passwd | grep -v userid >> /tmp/pass.tmp1 cat /etc/passwd | grep userid >> /tmp/pass.tmp2 PASS1=`cat /tmp/pass.tmp2 | cut -d ":" -f2` PASS2=`q2w3e4r5` sed... (3 Replies)
Discussion started by: indrajit_renu
3 Replies

3. Shell Programming and Scripting

root user command in shell script execute as normal user

Hi All I have written one shell script for GPRS route add is given below named GPRSRouteSet.sh URL="www.google.com" VBURL="10.5.2.211" echo "Setting route for $URL for GPRS" URL_Address=`nslookup $URL|grep Address:|grep -v "#"|awk -F " " '{print $2}'|head -1` echo "Executing ... (3 Replies)
Discussion started by: mnmonu
3 Replies

4. UNIX for Dummies Questions & Answers

How to give an ordinary user the superuser (root) ID which is 0

How to give an ordinary user the superuser (root) ID which is 0 (9 Replies)
Discussion started by: sharaola
9 Replies

5. Linux

grant root privileges to ordinary user

Hi, Is it possible to grant root privileges to an ordinary user? Other than 'sudo', is there some way under Users/Groups configuration? I want ordinary user to be able to mount, umount and use command mt. /Brendan (4 Replies)
Discussion started by: brendan76
4 Replies

6. Shell Programming and Scripting

Script using awk works only as super user

hi friends, I am a new Sun Solaris 10 user. I have the following script line=$(awk '{if(substr($0,1,1)!="#" && substr($0,1,1)!=";" && substr($0,1,1)!=" " && substr($0,1,1)!="/" && substr($0,1,1)!="*" && substr($0,1,1)!="\\" && length($0)!=0) ... (10 Replies)
Discussion started by: gjithin
10 Replies

7. Solaris

Sunsolaris shell script runs only as super user

Hi Friends, I am new to Sun solaris unix.I am facing problem while runing my kornshell script just as an ordinary user.The script works fine while i am working as a super user.the script just uses awk to check the first charcter of a file and then copies the file to another folder. Do i... (4 Replies)
Discussion started by: gjithin
4 Replies

8. AIX

[Help] Give privilege to an ordinary user

I'm trying to give a non-root user the right to start IBM HTTP Server, the web server is listening on port 80, but for AIX, ports under 1024 are privilege ports which can be used only by root. /usr/IBMIHS/bin# ./apachectl start (13)Permission denied: make_sock: could not bind to address :::80... (1 Reply)
Discussion started by: ibmer414
1 Replies

9. Shell Programming and Scripting

switching user from root to ordinary user

Good day Guys!!! I am currently making a script in AIX, the script runs a SAS job, the owner of the script is the root, but the SAS jobs cannot be run by the root, as it should be run by a user 'sasia'. But inside the script, root creates a logfile, so what I need is just to su to sasia for the... (3 Replies)
Discussion started by: sasia
3 Replies

10. UNIX for Dummies Questions & Answers

change user through shell script

hi, my problem is that i am calling a script from my perl program. the script checks wether a particular process is running or not if the process is not running then it should start the process. the problem here is that the front end logs into backend with a user which does not have the... (0 Replies)
Discussion started by: raviraushanjha
0 Replies
Login or Register to Ask a Question
CHSH(1) 							   User Commands							   CHSH(1)

NAME
chsh - change login shell SYNOPSIS
chsh [options] [LOGIN] DESCRIPTION
The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change the login shell for her own account; the superuser may change the login shell for any account. OPTIONS
The options which apply to the chsh command are: -h, --help Display help message and exit. -s, --shell SHELL The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell. If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks. NOTE
The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser, and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell back to its original value. FILES
/etc/passwd User account information. /etc/shells List of valid login shells. /etc/login.defs Shadow password suite configuration. SEE ALSO
chfn(1), login.defs(5), passwd(5). User Commands 06/24/2011 CHSH(1)