Re: Default PS1
On 2021/03/29 14:39, Greg Wooledge wrote: On Mon, Mar 29, 2021 at 01:49:41PM -0700, L A Walsh wrote: Or, what do you mean by 'default'? Is it sufficient to set it in the system /etc/profile so it is the default for all users when logging in? Sadly, that won't work. There are plenty of *extremely* common paths from power-on to shell which do not read /etc/profile. I have both /etc/profile and /etc/bashrc call my configuration scripts. Are there common paths that don't call one of those?
Re: Default PS1
On Mon, Mar 29, 2021 at 07:25:53PM -0700, L A Walsh wrote: > On 2021/03/29 14:39, Greg Wooledge wrote: > > On Mon, Mar 29, 2021 at 01:49:41PM -0700, L A Walsh wrote: > > > Or, what do you mean by 'default'? Is it sufficient > > > to set it in the system /etc/profile so it is the default > > > for all users when logging in? > > > > Sadly, that won't work. There are plenty of *extremely* common paths > > from power-on to shell which do not read /etc/profile. > >I have both /etc/profile and /etc/bashrc call my configuration > scripts. Are there common paths that don't call one of those? A vanilla bash compiled from GNU sources with no modifications will not source /etc/bash.bashrc or /etc/bashrc or any other such file. The SYS_BASHRC feature is off by default, and must be enabled at compile time. Many Linux distributions enable it, but there are surely systems with bash installed which have not enabled it. So that's one thing. Any login that uses a graphical Display Manager does not read /etc/profile. So that's the second thing. Now imagine a system with a vanilla bash, and a Display Manager login.
Re: Default PS1
In your .bashrc you can do PS1='My-linux-distro $\n' - Christopher Dimech General Administrator - Naiad Informatics - GNU Project (Geocomputation) - Geophysical Simulation - Geological Subsurface Mapping - Disaster Preparedness and Mitigation - Natural Resource Exploration and Production - Free Software Advocacy > Sent: Tuesday, March 30, 2021 at 8:49 AM > From: "L A Walsh" > To: "ილია ჩაჩანიძე" > Cc: bug-bash@gnu.org > Subject: Re: Default PS1 > > On 2021/03/29 04:04, ილია ჩაჩანიძე wrote: > > How can I set default PS1 variable from source code? > > > --- > What do you mean "from source code?" > > E.g I want it to display: > > My-linux-distro $ > > And not: > > Bash-5.1 $ > > > --- > Does the procedure documented in the bash man page not work? > > Or, what do you mean by 'default'? Is it sufficient > to set it in the system /etc/profile so it is the default > for all users when logging in? > > > > >
Re: Default PS1
On Mon, Mar 29, 2021 at 01:49:41PM -0700, L A Walsh wrote: > Or, what do you mean by 'default'? Is it sufficient > to set it in the system /etc/profile so it is the default > for all users when logging in? Sadly, that won't work. There are plenty of *extremely* common paths from power-on to shell which do not read /etc/profile. This sort of request (a polite word) is precisely why SYS_BASHRC was created.
Re: Default PS1
On 2021/03/29 04:04, ილია ჩაჩანიძე wrote: How can I set default PS1 variable from source code? --- What do you mean "from source code?" E.g I want it to display: My-linux-distro $ And not: Bash-5.1 $ --- Does the procedure documented in the bash man page not work? Or, what do you mean by 'default'? Is it sufficient to set it in the system /etc/profile so it is the default for all users when logging in?
Re: Default PS1
On Mon, Mar 29, 2021 at 01:42:10PM +0100, Chris Elvidge wrote: > On 29/03/2021 12:04 pm, ილია ჩაჩანიძე wrote: > > How can I set default PS1 variable from source code? > > E.g I want it to display: > > My-linux-distro $ > > And not: > > Bash-5.1 $ > > > > Set it in $HOME/.bashrc Given that the goal is clearly to make a new "default" for all users on their custom operating system, a more viable answer is probably to enable the SYS_BASHRC feature in config-top.h and then set the PS1 variable in /etc/bash.bashrc (or whatever file they point it to) to advertise their operating system to people who already run it.
Re: Default PS1
On 29/03/2021 12:04 pm, ილია ჩაჩანიძე wrote: How can I set default PS1 variable from source code? E.g I want it to display: My-linux-distro $ And not: Bash-5.1 $ Set it in $HOME/.bashrc -- Chris Elvidge England
Default PS1
How can I set default PS1 variable from source code? E.g I want it to display: My-linux-distro $ And not: Bash-5.1 $
default PS1 is not POSIX-compliant?
Chet, can you weigh in on http://austingroupbugs.net/view.php?id=1038 ? There is a question of whether bash's choice of setting PS1='\s-\v\$ ' is correct in --posix mode, or whether it should be merely PS1='\$ ' when started in sh mode. Allowing more than just the dollar (or hash for root) and space would require a tweak to the POSIX wording. Personally, I _like_ the longer prompt (it quickly lets me know whether I'm using bash or some other shell), and you can always set PS1 to whatever you want if the shell-startup default wasn't appropriate, but if it is easier to patch 'bash --posix' to use a shorter prompt than it is to fix the POSIX wording, then that may be the course to take. Also, the bash behavior of modifying PS4 during subshells does not match what other shells do. -- Eric Blake eblake redhat com+1-919-301-3266 Libvirt virtualization library http://libvirt.org signature.asc Description: OpenPGP digital signature
