[GRASS-user] Unable to modify PS1 variable

GRASS GRASS user
1

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to current Grass location and full directory path, respectively). The result is my prompt is eating almost the full width of my shell window.

Just wondering what other resource files need to be changed?

Thanks,

~ Eric.

2

On Thu, Feb 28, 2019 at 3:20 PM Patton, Eric (NRCan/RNCan)
<eric.patton@canada.ca> wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have
PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to
current Grass location and full directory path, respectively). The result is my prompt is eating
almost the full width of my shell window.

Just to be sure: what is $SHELL set to? What is the output of:

echo $SHELL

  and

ls -la $(which $SHELL)

?

Markus

3
···

On 28/02/2019 16:10, Patton, Eric (NRCan/RNCan) wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to current Grass location and full directory path, respectively). The result is my prompt is eating almost the full width of my shell window.

Just wondering what other resource files need to be changed?

On my system (Debian, GRASS 7.6) it’s ~/.grass7/bashrc

Thanks,

~ Eric.

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[https://lists.osgeo.org/mailman/listinfo/grass-user](https://lists.osgeo.org/mailman/listinfo/grass-user)

-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918
4

On Thu, Feb 28, 2019 at 3:20 PM Patton, Eric (NRCan/RNCan) <eric.patton@canada.ca> wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I
have
PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt
consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W
expanded to current Grass location and full directory path,
respectively). The result is my prompt is eating almost the full width of my shell window.

Just to be sure: what is $SHELL set to? What is the output of:

echo $SHELL

and

ls -la $(which $SHELL)

Markus,

Here is the output:

echo $SHELL
/bin/bash

ls -al $(which $SHELL)
-rwxr-xr-x 1 root root 1037440 May 26 2017 /bin/bash

~ Eric.

5

On Thu, Feb 28, 2019 at 3:21 PM Patton, Eric (NRCan/RNCan) <eric.patton@canada.ca> wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to current Grass location and full directory path, respectively). The result is my prompt is eating almost the full width of my shell window.

Just wondering what other resource files need to be changed?

You could directly hack the GRASS startup script grass77, there in the fn bash_startup() the line that defines PS1, around L1772.

HTH,

Markus M

6

Thanks for that, Markus, that works.

~ Eric.

···

On Thu, Feb 28, 2019 at 3:21 PM Patton, Eric (NRCan/RNCan) <eric.patton@canada.ca> wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to current Grass location and full directory path, respectively). The result is my prompt is eating almost the full width of my shell window.

Just wondering what other resource files need to be changed?

You could directly hack the GRASS startup script grass77, there in the fn bash_startup() the line that defines PS1, around L1772.

HTH,

Markus M

7

Micha, I don’t have a bashrc file in ~.grass7. And copying ~/.grass.bashrc to ~/.grass7/bashrc and restarting Grass doesn’t change anything (PS1 remains the same). It seems the grass77 startup is clobbering all other places where $PS1 is set.

~ Eric.

···

From: Micha Silver tsvibar@gmail.com
Sent: February 28, 2019 11:49
To: Patton, Eric (NRCan/RNCan) eric.patton@canada.ca; grass-user@lists.osgeo.org
Subject: Re: [GRASS-user] Unable to modify PS1 variable

On 28/02/2019 16:10, Patton, Eric (NRCan/RNCan) wrote:

Hi, I am having trouble changing my PS1 bash prompt in Grass 7.7svn. I have PS1 set to “\W >” in ~/.grass.bashrc, but instead my prompt consistently prints

“GRASS 7.7.svn ($LOCATION_NAME):\w > “ (with LOCATION_NAME and \W expanded to current Grass location and full directory path, respectively). The result is my prompt is eating almost the full width of my shell window.

Just wondering what other resource files need to be changed?

On my system (Debian, GRASS 7.6) it’s ~/.grass7/bashrc

Thanks,

~ Eric.

_______________________________________________

grass-user mailing list

[grass-user@lists.osgeo.org](mailto:grass-user@lists.osgeo.org)

[https://lists.osgeo.org/mailman/listinfo/grass-user](https://lists.osgeo.org/mailman/listinfo/grass-user)

-- 

Micha Silver

Ben Gurion Univ.

Sde Boker, Remote Sensing Lab

cell: +972-523-665918