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while true
Guru
Joined: 07 Apr 2010
Posts: 532
Location: Ljubljana, Slovenia
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 Posted: Tue Nov 13, 2018 8:24 pm Post subject: terminal not clearing the line when scrolling past commands |
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Hello Gentoo people
I have ubuntu on laptop, and i have several rpi's and on my main box i have gentoo.
I believe it is my bad english that produced no answer searching the internet so I thought i might ask for help here.
I have 2 terminals, xterm and st, on gentoo. As i use up arrow button to get past commands it does not cleas some commands.
It is hard to explain so i made a very short video, it happens at 10 seconds
https://www.youtube.com/watch?v=kqJn0ajsfZw
This happens only on gentoo.
Is there something i can do?
Thank you
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Kind regards, Goran Mitic
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eccerr0r
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Joined: 01 Jul 2004
Posts: 9711
Location: almost Mile High in the USA
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| Posted: Tue Nov 13, 2018 9:41 pm Post subject: |
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I noticed that you have color in your text and it differs than of your prompt. Perhaps your PS1 prompt doesn't have all the codes needed to tell bash what to clear. If you clear PS1 to something very simple like PS1='$ ' can you reproduce the problem?
Or perhaps something in your history has some control codes that is confusing bash. From a clean environment (i.e. no history), is this readily reproducable?
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while true
Guru
Joined: 07 Apr 2010
Posts: 532
Location: Ljubljana, Slovenia
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| Posted: Tue Nov 13, 2018 11:51 pm Post subject: |
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Hello eccerr0r,
You are right on the point, it is PS1
with PS1='$ ' i could not reproduce the problem (xterm or st). my PS1 is
PS1='\e[0;32m\]\u@\h \w \$\e[0m\] '
and i copy & pasted that from some colourful online bashrc.
Thank you, i will now look for correct PS syntax
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eccerr0r
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Joined: 01 Jul 2004
Posts: 9711
Location: almost Mile High in the USA
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| Posted: Wed Nov 14, 2018 12:01 am Post subject: |
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I'd try this
| Code: | | PS1='\[\e[0;32m\]\u@\h \w \$\[\e[0m\] ' |
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while true
Guru
Joined: 07 Apr 2010
Posts: 532
Location: Ljubljana, Slovenia
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| Posted: Wed Nov 14, 2018 12:36 am Post subject: |
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hey eccerr0r,
yes i see i have some 'brackets' missing, i found this page:
https://www.ibm.com/developerworks/linux/library/l-tip-prompt/
and came up with this:
| Code: | | PS1='\[\e[36;1m\]\u\[\e[33;1m\]@\[\e[36;1m\]\h \[\e[32;1m\]\w \[\e[36;1m\]\$ \[\e[31;1m\]> \[\e[0m\]' |
Again, thank you for your time and input, man, sure did lift the stone from my hart, <3
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josephg
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Joined: 10 Jan 2016
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| Posted: Wed Nov 14, 2018 11:09 pm Post subject: |
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| while true wrote: | my PS1 is
PS1='\e[0;32m\]\u@\h \w \$\e[0m\] ' |
what eccerr0r said. you have to enclose non-printing characters within \[ and \]
thus your above prompt should be
| Code: | | PS1='\[\e[0;32m\]\u@\h \w \$\[\e[0m\] ' |
you are terminating them ok but without starting
http://nixventure.blogspot.com/2018/10/shell-in-colours.html
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