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Full Discussion: Alias is not working under Bourne Shell
Operating Systems Solaris Alias is not working under Bourne Shell Post 302960170 by cjcox on Wednesday 11th of November 2015 05:32:18 PM
Old 11-11-2015
Quote:
Originally Posted by jlliagre
Finally, "echo $SHELL", is also an incorrect way to identify what shell you are running, This command will tell you the user's default shell, i.e. the one defined in the passwd database.
No. The SHELL var, where used/understood just says what shell to use if needed (e.g. .a sub shell created from another process). Doesn't have to be the shell defined in user's passwd entry at all, in fact has better chance of being set by the shell itself.

What shell is running?

echo $0 might be the best hint. Or ps -p $$
 

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LEARN ABOUT XFREE86

chsh

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)
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