Sponsored Content
Full Discussion: Bash script to change user
Top Forums Shell Programming and Scripting Bash script to change user Post 303045686 by vgersh99 on Wednesday 8th of April 2020 12:27:22 PM
Old 04-08-2020
you didn't provide the specific like OS, preferred shell etc...
just guessing - YMMV:
Code:
#!/bin/ksh

read $user_name
if [ $(grep $user_name /etc/password) ]; then
    :
else
   echo "error. There is no such user" 
   exit 1
fi
if [ ${#user_name} -ge 30 ]; then
    echo "error" 
    exit 1
fi
sudo su $user_name 
exit 0

 

9 More Discussions You Might Find Interesting

1. 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

2. Shell Programming and Scripting

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... (3 Replies)
Discussion started by: wrapster
3 Replies

3. Shell Programming and Scripting

Unable to change environment variables in bash script

Hello! For the moment some settings in my .bashrc contain the password of my company's firewall, which is not a good idea. I would like to use the string "PASSWORD" set in .bashrc and a script that changes all appearances of "PASSWORD" in the environment variables by the actual password (which... (4 Replies)
Discussion started by: markolopa
4 Replies

4. 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

5. UNIX for Dummies Questions & Answers

BASH: Change alias to script to add a task

Hi. I use an alias, "homeperm" as shorthand for curl -o. Since most of what I download via cUrl is graphic image files -- jpeg files -- I'd like to be able to change this alias to a script, or use it to invoke a function, which will not only download the file but date-stamp it using Exiv2 in... (4 Replies)
Discussion started by: SilversleevesX
4 Replies

6. 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

7. Shell Programming and Scripting

Change user in script

i have a script that needs to be run as a specific user. lets call this specific user "skysmart". sure, i can check the username of the person running the script and if it isn't "skysmart", simply abort with a descriptive error message. but then, that would require the user to have to "sudo su... (6 Replies)
Discussion started by: SkySmart
6 Replies

8. Shell Programming and Scripting

Is it possible to change paths inside a bash script?

i have some script with some paths inside it. The idea is to some files which is on desktop copy and move to another location. Problem is that inside script is similar to this: cp test1.zip /root/help/ because I allways have another zip files, does it possible to have some input which ask me... (18 Replies)
Discussion started by: tomislav91
18 Replies

9. Shell Programming and Scripting

Change directory within a bash shell script

Hi, I have been trying to execute the below command by changing directory and then copying contents of one directory to another by doing some file name manipulations in between. However this isnt working since as soon as the statement completes it goes back to the original folder. Can someone... (5 Replies)
Discussion started by: HikingLife
5 Replies
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. -R, --root CHROOT_DIR Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. -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). shadow-utils 4.5 01/25/2018 CHSH(1)
All times are GMT -4. The time now is 08:22 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy