Member Avatar for tech291083

Hi,

My prompt looks like this

[root@x1-6-00-c0-9f-cc-er-57 ~]#

It used to be something like

[root@localhost ~]#

What is wrong? Can any one help? Thanks..

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Nothing is wrong with Bash. Your prompt is showing the current hostname (via \h). It used to be "localhost", but your machine has since picked up a different hostname (likely from DHCP), so \h now expands to that long string. You can confirm with:

hostname

If you want the old style back, fix the hostname instead of hardcoding the prompt. On modern, systemd-based distros:

hostnamectl set-hostname localhost

Then ensure /etc/hosts maps 127.0.0.1 (or 127.0.1.1 on Debian/Ubuntu) to that name. See the hostnamectl man page for details man7.org/linux/man-pages/man1/hostnamectl.1.html.

About the "Permission denied": you tried to run ~/.bashrc as a program. .bashrc is a config file, not executable. Open it with a text editor, add a PS1 line, then source it so the change takes effect immediately. For example:

PS1='[\u@\h \w]\$ '
source ~/.bashrc

Note: \$ prints # for root and $ for normal users (using \# would show the command number instead). Bash’s prompt escapes are documented here gnu.org/software/bash/manual/bash.html#Controlling-the-Prompt.

Tip: If your hostname keeps changing on boot, your DHCP client or NetworkManager may be setting it. Either set a static hostname as above or disable accepting hostnames from DHCP in your network configuration.

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Member Avatar for Sturm

To change it look in ~/.bashrc. It should have an entry that looks like this PS1='\u \w\# ' . Change it too PS1='[\u@\h \w] \# '

Member Avatar for tech291083

To change it look in ~/.bashrc. It should have an entry that looks like this PS1='\u \w\# ' . Change it too PS1='[\u@\h \w] \# '

thanks,

how do I open it though?

If I do this then here is what I get

[root@x1-6-00-c0-9f-bb-ba-57 ~]# ~/.bashrc
bash: /root/.bashrc: Permission denied

What to do? Thanks...

Member Avatar for Sturm

With a text editor nano ~/.bashrc

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