Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #921
Difficulty: Medium
Unix Epoch Time cannot be extended backwards from the epoch date.
True or False?
Linux & Unix Commands - Search Man Pages

chsh(1) [linux man page]

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)

Check Out this Related Man Page

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)

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

"no shell"

At the login prompt of a unix system I get no shell. The backup job ran without a new tape for three days, and when the user tries to logon the message "no shell" appears. Is the system in the wrong directory for login? (19 Replies)
Discussion started by: jweldin
19 Replies

2. Shell Programming and Scripting

How can I change my default shell

hi ; Right now my default shell on our school system is : /bin/ksh but i want to change it to another shell. There is also bash shell installed in the system as : /bin/bash So, how can I change my default shell to bash shell? Or maybe any other shell? (17 Replies)
Discussion started by: milhan
17 Replies

3. Shell Programming and Scripting

how to connect to admin accout through script

hi everyone i'm running script in c-shell and i want this script to connect to admin account in order to run other script in k-shell. after that i want the script to be severed from the admin account and to continue with the regular commands example: my script call cs-customers echo"starting... (16 Replies)
Discussion started by: naamas03
16 Replies

4. UNIX for Dummies Questions & Answers

How to select line by line in shell

Hi, This is what the file data.lst contains. aaaaaaaa eeeeeeeeeeeeeeee 4444444 rrrrrrrrrrrrr tttttttttttt bbbbbbbb eeeeeeeeeeeeeeee 7777777 uuuuuuuu eeeeeeeee qqqqqqqq gggggggggggggggg 6666666 oooooooo ppppppppp Here I want to cut the third field and put it in a new file ... (15 Replies)
Discussion started by: preethgideon
15 Replies

5. Shell Programming and Scripting

List Duplicate

Hi All This is not class assignment . I would like to know awk script how to list all the duplicate name from a file ,have a look below Sl No Name Dt of birth Location 1 aaa 1/01/1975 delhi 2 bbb 2/03/1977 mumbai 3 aaa 1/01/1976 mumbai 4 ... (22 Replies)
Discussion started by: vakharia Mahesh
22 Replies

6. Programming

Need some help with this...

I am trying to implement some kind of a which program. I could get the PATH environment variable and was able to tokenize it. I have a list of paths in tokens. Now, I have the name of the shell command. How would I search the tokens and display where the command was found? (41 Replies)
Discussion started by: Legend986
41 Replies

7. Shell Programming and Scripting

How to display message when starting a terminal

Hello all, I would like a message to be displayed on the shell when someone opens up the terminal - something like a welcome msg with date and time. I know how to do this by running the shell commands but dont know how to display it when a user opens up the terminal? Thanks in advance (27 Replies)
Discussion started by: mrudula009
27 Replies

8. AIX

Last login details in banner

Friends!! I need your help. Where can i change/set the last login details as below in aix 5.3. And how to do that to get the results as exactly below login as: mbpops mbpops@xx.28.3.24's password: Last unsuccessful login: Mon Nov 22 14:32:27 GMT 2010 on ssh from 10.132.5.129 Last login:... (17 Replies)
Discussion started by: kmvinay
17 Replies

9. Shell Programming and Scripting

Gawk help (windows)

Someone help please. I tried to do it with findstr but I couldn't, so now I'm trying to output the following numbers from this text file with gawk (what I need is in bold down below): Analyzing pool.ntp.org (1 of 1)... delayoffset from local clock Stratum: 2 Warning: Reverse name... (18 Replies)
Discussion started by: harris_t
18 Replies

10. Shell Programming and Scripting

Print arguments using array elements not working?

Hey guys, I'm new to shell scripting and I'm trying to write a script that takes user input and copies the specified columns from a data file to a new one. In order to account for the possibility of a variable number of columns to copy I wrote a loop that encodes the user's choices in an array... (16 Replies)
Discussion started by: shaner
16 Replies

11. Shell Programming and Scripting

Script as login shell (passing args to login shell)

Hello all, for security reasons my compagny imposes that my script be launch remotly via ssh under the users login shell. So serverA launches the ssh command to serverB which has a local user with my script as a login shell. Local script works like a charm on his own. serverB$ grep... (20 Replies)
Discussion started by: maverick72
20 Replies

12. Shell Programming and Scripting

Issues with setting Aliases

Hi, I have set alias rm='rm -i' and i m able to see that in the list of aliases. however, when i fire the rm command the '-i' interactive flag does not seem to kick in. I login to a free online terminal and then i say bash to set the bash profile. Join Here is the output... (27 Replies)
Discussion started by: mohtashims
27 Replies

13. Shell Programming and Scripting

Unable to grep the process

I have user1 run a script called logginexpert.sh while has this line of code sleep 888I then login to another putty session with another user2 and try to grep for the logginexpert.sh process using ps -ef | grep exSunOS mymac 5.11 11.2 sun4u sparc SUNW,SPARC-Enterprise But, i dont get any... (20 Replies)
Discussion started by: mohtashims
20 Replies

14. Shell Programming and Scripting

UNIX shell scripting logic

This is my source file and required output is mentioned as below. Any input on how to proceed. start name=vamsi phone=123456789 mailid=abc@gmail.com adress:-india end start name=vamsi1 phone=1234567890 mailid=abc1@gmail.com adress:-usa end required output:... (15 Replies)
Discussion started by: vamsi.valiveti
15 Replies

15. Shell Programming and Scripting

Sudo password in shell file

Hi all, I have a script like this, where i am trying to login into oracle db via ssh and do a account unlock. #!/bin/sh ip=$1 os_user=$2 key=$3 ou_user=$4 ou_pass=$5 unlock_user=$6 ssh -i $key $os_user@$ip sudo -u $ou_user -p $ou_pass -- i am getting error here...its not taking... (16 Replies)
Discussion started by: onenessboy
16 Replies

Featured Tech Videos