12-26-2014
How to set for a user a non-login shell?
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I am a root in a Unix system. My shell is bash.
2. Relevant commands, code, scripts, algorithms:
How to set for a certain user:
* a non-login interactive shell,
* a login, non-interactive shell,
* a non-login, non-interactive shell.
3. The attempts at a solution (include all code and scripts):
I read everything I could find, I only found information which files are read by different types of shells. I cannot find anywhere how a root can set a certain shell. I know about useradd and adduser commands where I can use the option -s but I do not know what to put after -s to set a non-interactive shell.
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
AGH, profesor Nalepa
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
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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)