02-02-2016
How to Switch from Local user to root user from a shell script?
Hi,
I need to switch from local user to root user in a shell script.
I need to make it automated so that it doesn't prompt for the root password.
I heard the su command will do that work but it prompt for the password.
and also can someone tell me whether su command spawns a new shell or runs in the same shell as parent script?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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
2. Shell Programming and Scripting
Hi Experts,
I'm trying to write a shell script to stop few things where i have to use another user to execute a command. Otherwise it will not work.
Your help is really appreciated
Thanks, (16 Replies)
Discussion started by: Afi_Linux
16 Replies
3. Shell Programming and Scripting
Hi Gurus,
I have a script that requires me to switch from local user to root. Anyone who has an idea on this since when i switch user to root it requires me to input root password.
It seems that i need to use expect module here, but i don't know how to create the object for this.
... (1 Reply)
Discussion started by: linuxgeek
1 Replies
4. Shell Programming and Scripting
Hi,
I am trying to create one script where I have to login as another user inside the script to exeute some commands
How can i achieve this?
Many thanks in advance. (4 Replies)
Discussion started by: prarat
4 Replies
5. Shell Programming and Scripting
Hi,
script1.sh
script2.sh
script3.sh
From above, script1.sh is the main script which is executed from root user, creates installation directory, changing ownership and execution rights etc..etc.. and finally calls scripot2.sh and script3.sh to create the database as well as for post... (1 Reply)
Discussion started by: milink
1 Replies
6. Shell Programming and Scripting
Hi Every body,
I would need a shell script program to login as different user and perform some copy commands in the script.
example: Supppose ora_toms is the active user
ora_toms should be able to run a script where user: ftptomsp pass: XXX should login through and run the commands
... (9 Replies)
Discussion started by: ujjwal27
9 Replies
7. UNIX for Dummies Questions & Answers
Hi all,
I have a small problem. When I log in as root and try to switch to any other user using su -user, then it is giving an error saying libncurses.so permission denied. Can you help me?
Thank you in advance.
Sai. (1 Reply)
Discussion started by: sai2krishna
1 Replies
8. Shell Programming and Scripting
I am writing a korn shell script where i need to switch to root in between and again exit from root to normal user and continue other commands.
Is that possible to switch between these two in the same script? (1 Reply)
Discussion started by: santosh2626
1 Replies
9. Shell Programming and Scripting
Hi everyone:
I need create a script that must switch user and then must execute
certain commands, sadly neither my user nor the second user have no privileges
for su - ,
I've tried everything but seems su doesn't accept input redirection,
please help me,
... (4 Replies)
Discussion started by: ooilinlove
4 Replies
10. UNIX for Beginners Questions & Answers
HI
in a server we can't login with root user directly but i can login with different user and then i can switch to root user by su command
Requirement
is there anyway where i can write a script without mentioning password in file as mentioning the root password is not the... (3 Replies)
Discussion started by: scriptor
3 Replies
LEARN ABOUT DEBIAN
passmass
PASSMASS(1) General Commands Manual PASSMASS(1)
NAME
passmass - change password on multiple machines
SYNOPSIS
passmass [ host1 host2 host3 ... ]
INTRODUCTION
Passmass changes a password on multiple machines. If you have accounts on several machines that do not share password databases, Passmass
can help you keep them all in sync. This, in turn, will make it easier to change them more frequently.
When Passmass runs, it asks you for the old and new passwords. (If you are changing root passwords and have equivalencing, the old pass-
word is not used and may be omitted.)
Passmass understands the "usual" conventions. Additional arguments may be used for tuning. They affect all hosts which follow until
another argument overrides it. For example, if you are known as "libes" on host1 and host2, but "don" on host3, you would say:
passmass host1 host2 -user don host3
Arguments are:
-user
User whose password will be changed. By default, the current user is used.
-rlogin
Use rlogin to access host. (default)
-slogin
Use slogin to access host.
-ssh
Use ssh to access host.
-telnet
Use telnet to access host.
-program
Next argument is a program to run to set the password. Default is "passwd". Other common choices are "yppasswd" and "set
passwd" (e.g., VMS hosts). A program name such as "password fred" can be used to create entries for new accounts (when run as
root).
-prompt
Next argument is a prompt suffix pattern. This allows the script to know when the shell is prompting. The default is "# " for
root and "% " for non-root accounts.
-timeout
Next argument is the number of seconds to wait for responses. Default is 30 but some systems can be much slower logging in.
-su
Next argument is 1 or 0. If 1, you are additionally prompted for a root password which is used to su after logging in. root's
password is changed rather than the user's. This is useful for hosts which do not allow root to log in.
HOW TO USE
The best way to run Passmass is to put the command in a one-line shell script or alias. Whenever you get a new account on a new machine,
add the appropriate arguments to the command. Then run it whenever you want to change your passwords on all the hosts.
CAVEATS
Using the same password on multiple hosts carries risks. In particular, if the password can be stolen, then all of your accounts are at
risk. Thus, you should not use Passmass in situations where your password is visible, such as across a network which hackers are known to
eavesdrop.
On the other hand, if you have enough accounts with different passwords, you may end up writing them down somewhere - and that can be a
security problem. Funny story: my college roommate had an 11"x13" piece of paper on which he had listed accounts and passwords all across
the Internet. This was several years worth of careful work and he carried it with him everywhere he went. Well one day, he forgot to
remove it from his jeans, and we found a perfectly blank sheet of paper when we took out the wash the following day!
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
7 October 1993 PASSMASS(1)