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Thread: Strange prompt for the console

  1. #1
    Join Date
    Jan 2012
    Beans
    753

    Strange prompt for the console

    When I use the console without the X server, either by not starting Xorg or by pressing "CTRL-Alt-F1", the user prompt looks strange, and I can't seem to get it back.

    Code:
    Ubuntu 12.04.1 LTS kubuntu tty1
    
    kubuntu login: alex
    Password: 
    Last login: Tue Sep 25 19:06:59 PDT 2012 on tty1
    Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-31-generic x86_64)
    
     * Documentation:  https://help.ubuntu.com/
    
    ;alex@kubuntu: ~alex@kubuntu:~$
    This only happens on the actual console, but not with Konsole or any other terminal like that.

    The weird thing is that when I logged onto another computer with Kubuntu 12.04 via SSH, it had the same problem, but when I SSHed into a computer with Kubuntu 11.10, it didn't have the problem.

    The problem seemed to occur for no reason, just one time I logged in through the console and the prompt was like that.

    How do I fix this? I looked at ~/.bashrc but I couldn't find anything wrong with it.

    Code:
    # ~/.bashrc: executed by bash(1) for non-login shells.
    # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
    # for examples
    
    # If not running interactively, don't do anything
    [ -z "$PS1" ] && return
    
    # don't put duplicate lines in the history. See bash(1) for more options
    # ... or force ignoredups and ignorespace
    HISTCONTROL=ignoredups:ignorespace
    
    # append to the history file, don't overwrite it
    shopt -s histappend
    
    # for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
    HISTSIZE=1000
    HISTFILESIZE=9001
    
    # check the window size after each command and, if necessary,
    # update the values of LINES and COLUMNS.
    shopt -s checkwinsize
    
    # make less more friendly for non-text input files, see lesspipe(1)
    [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
    
    # set variable identifying the chroot you work in (used in the prompt below)
    if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
        debian_chroot=$(cat /etc/debian_chroot)
    fi
    
    # set a fancy prompt (non-color, unless we know we "want" color)
    case "$TERM" in
        xterm-color) color_prompt=yes;;
    esac
    
    # uncomment for a colored prompt, if the terminal has the capability; turned
    # off by default to not distract the user: the focus in a terminal window
    # should be on the output of commands, not on the prompt
    force_color_prompt=yes
    
    if [ -n "$force_color_prompt" ]; then
        if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
    	# We have color support; assume it's compliant with Ecma-48
    	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
    	# a case would tend to support setf rather than setaf.)
    	color_prompt=yes
        else
    	color_prompt=
        fi
    fi
    
    if [ "$color_prompt" = yes ]; then
        PS1='\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
    else
        PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
    fi
    unset color_prompt force_color_prompt
    
    # If this is an xterm set the title to user@host:dir
    case "$TERM" in
    xterm*|rxvt*)
        PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
        ;;
    *)
        ;;
    esac
    
    # enable color support of ls and also add handy aliases
    if [ -x /usr/bin/dircolors ]; then
        test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
        alias ls='ls --color=auto'
        #alias dir='dir --color=auto'
        #alias vdir='vdir --color=auto'
    
        alias grep='grep --color=auto'
        alias fgrep='fgrep --color=auto'
        alias egrep='egrep --color=auto'
    fi
    
    # some more ls aliases
    alias ll='ls -alF'
    alias la='ls -A'
    alias l='ls -CF'
    
    # custom aliases
    alias cls='clear'
    
    # Add an "alert" alias for long running commands.  Use like so:
    #   sleep 10; alert
    alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
    
    # Alias definitions.
    # You may want to put all your additions into a separate file like
    # ~/.bash_aliases, instead of adding them here directly.
    # See /usr/share/doc/bash-doc/examples in the bash-doc package.
    
    if [ -f ~/.bash_aliases ]; then
        . ~/.bash_aliases
    fi
    
    # enable programmable completion features (you don't need to enable
    # this, if it's already enabled in /etc/bash.bashrc and /etc/profile
    # sources /etc/bash.bashrc).
    if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
        . /etc/bash_completion
    fi

  2. #2
    Join Date
    Jun 2005
    Location
    Toronto, Canada
    Beans
    Hidden!
    Distro
    Xubuntu Development Release

    Re: Strange prompt for the console

    I believe this is a result of an error in the PS1 variable from this section:
    Code:
    if [ "$color_prompt" = yes ]; then
        PS1='\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
    else
        PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
    fi
    unset color_prompt force_color_prompt
    The line in red should read:
    Code:
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

  3. #3
    Join Date
    Jan 2012
    Beans
    753

    Re: Strange prompt for the console

    Thank you! ^^

    But why wasn't the prompt affected with Konsole?

  4. #4
    Join Date
    Jun 2005
    Location
    Toronto, Canada
    Beans
    Hidden!
    Distro
    Xubuntu Development Release

    Re: Strange prompt for the console

    Not sure (I don't use KDE to be able to test). Perhaps the if statement is evaluating false and it is using the second PS1 statement?

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