Linux switch to bash

How to Switch to bash from zsh in Linux?

In Linux, a shell is a program that inputs the command from the user and sends it to the operating system. There are various types of shells that Linux provides, such as Bash, zsh, Ksh, and fish, Bash, and Zsh. the bash shell is the default used by the Linux operations system, whereas others can be installed manually.

This article will demonstrate the method to switch zsh to bash shell. The content for the post is as follows:

Let’s start with the comparison of Zsh and Bash.

Zsh Shell Vs Bash Shell

The zsh shell is the command line interpreter tool that gives additional features apart from the bash shell, such as automatic command completion, spell check, path, and much more.

In Linux, the bash shell is the enhanced version of the shell which is similar to the original shell that provides additional features such as command editing. A bash shell is used when users have to deal with large quantities of files and data.

zsh Shell	Bash Shell
It is the extended version of the bash shell that comes with additional features apart from the bash shell.	It is the enhanced version of the shell similar to the original shell.
It uses the .zshrc and .zprofile for shell login	It uses the .bashrc and .bash_profile for shell login.
The zsh shell provides frameworks that are customizable.	Don’t have any customization options.
For escaping zsh use the percentage sign.	For escaping the bash shell use the backslash(/).

Now, let’s head over to the main method.

How to Switch to Bash From Zsh?

Users can switch bash to zsh and zsh to bash shell by simply running the “exec” command which is given below.

Step 1: Verify the Current Shell

First, we have to ensure that the current shell is being used in zsh. To do so, use the command.

The output confirms that the zsh is being used.

Step 2: Switch the Shell

The “exec” keyword is used to switch to different shells. In this case, we are using the following command to switch to bash:

Step 3: Verify the Change

To confirm the current shell, use the command in the terminal:

Note: If you want to switch from bash to zsh, use the command:

That’s how you can switch between zsh and bash in Linux.

Conclusion

In Linux, the zsh is the enhanced version of the bash shell, and the user can switch from zsh to bash by simply running the “exec” command in the terminal. This post has briefly illustrated the comparison between bash and zsh shells also the conversion methods from zsh to bash shell.

Источник

How do you change the default shell for ALL USERS to bash?

I want every new user from now on to have bash as their shell by default. I know that to change your own shell to bash, you would use the command «chsh -s /bin/bash», but how do I automatically set all future users’ shell to bash by default?

3 Answers 3

The adduser defaults file is /etc/adduser.conf . The default shell defined by the DSHELL variable is /bin/bash by default.

Most likely you don’t need this because useradd is a very low-level utility, and it’s hardly ever used directly.

If you use useradd, edit the /etc/default/useradd skeleton file (don’t forget to make a backup though).

Set the SHELL variable to /bin/bash instead of /bin/sh .

Now every time you use useradd to add a new user bash is automatically their default shell.

Already existing users

If you want to change the shell of already existing users you have to edit the /etc/passwd file (please make sure to back have a backup of it).

Here is a description of the columns

1. login name
2. optional encrypted password
3. numerical user ID
4. numerical group ID
5. user name or comment field
6. user home directory
7. optional user command interpreter

In that order separated by colons (:) like this.

For more information about that file consult the man page man 5 passwd .

Источник

How do I switch from an unknown shell to bash?

I was surprised that I didn’t find this question already on the site. So, today $ came up after I logged in as a new user. This was unexpected because my main user’s prompt starts with username@computername:~$ . So, how do I switch from this other shell to bash?

Just because $ came up rather than username@computername:~$ doesn’t mean it wasn’t bash. The exact formatting of the prompt is set by the PS1 variable, which can be set up or customized differently for different users.

@mouche @frabjous and beginning with a $ is actually common for bash, some non bash shells like zsh use the % out of the box, I believe other shells use other things.

@mouche being /bin/sh often doesn’t mean much that’s usually a symlink to something else. I’d type ls -l /bin/sh to see what it’s a symlink to. In some cases being a symlink to something changes its behavior, I don’t think bash is that way.

@xenoterracide — Using bash as /bin/sh disables many bash features (it goes into POSIX compliance mode).

3 Answers 3

Assuming the unknown shell supports running an absolute command, you could try: /bin/bash

To change the default shell, I would use chsh(1) . Sample usage: chsh -s /bin/bash $USER

@mouche, chsh(1) will only allow to change to a shell that is listed in /etc/shells (and is available, presumably). chsh -l lists the alternatives. Be careful, some (like nologin ) are defined for accounts that should never be used to login (nice way to lock yourself out), there might be local additions for special uses.

You type in bash . If you want this to be a permanent change the default shell to /bin/bash by editing /etc/passwd .

Here’s some snippets from my /etc/passwd :

avahi:x:84:84:Avahi daemon:/:/bin/false xenoterracide:x:1000:100::/home/xenoterracide:/bin/zsh postgres:x:88:88::/var/lib/postgres:/bin/zsh bob:x:1001:1001::/home/bob:/bin/bash usbmux:x:140:140:usbmux user:/:/sbin/nologin 

The very last field contains the shell, Modifying the field after the last : to a valid or invalid shell will work. /bin/false and /sbin/nologin both mean the user doesn’t have a real login shell, although if pam is not set up right this doesn’t mean they can’t login (I reported a bug on this in Arch Linux, because you can login graphically without having a login shell). /bin/bash and /bin/zsh are both valid shells, see /etc/shells for a list of valid shells on your systems. Here’s my /etc/shells if you’re interested.

/bin/sh /bin/bash /bin/ksh /bin/zsh /bin/dash 

Yes you can use chsh or usermod to do the same things, please remember these are just structured text files, and TIMTOWTDI.

Источник