Novo Bash Prompt

Abaixo veremos o novo .bashrc que uso no Debian Wheezy, a config padrão é do prórpio Debian e nela foram acrescidos um novo PS1, uma opção que define como a barra de título do Xterm e outros terminais se comportam e a definição do $PATH do usuário.

prompt de comando no Debian.

Se desejar, salve o conteúdo abaixo em lugar de seu ~/.bashrc:

# ~/.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
case $- in
    *i*) ;;
      *) return;;
esac

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth

# 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=2000

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar

# 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 [ "$color_prompt" = yes ]; then
    PS1='${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 -l'
#alias la='ls -A'
#alias l='ls -CF'

# 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 ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

#######################################################################

# New Bash Prompt.
PS1='\[\e[1;36m\]\d \[\e[1;31m\]\t \[\e[1;33m\]\u@\[\e[1;32m\]\h:\w\$\[\e[0;34m\] '

FGNAMES=('▐▐▐' '▐▐▐' '▐▐▐' '▐▐▐' '▐▐▐' '▐▐▐' '▐▐▐' '▐▐▐')
BGNAMES=('  ')

for b in $(seq 0 0); do
    if [ "$b" -gt 0 ]; then
      bg=$(($b+39))
    fi
echo
    for f in $(seq 0 7); do
      echo -en "\033[${bg}m\033[$(($f+30))m ${FGNAMES[$f]} "
      echo -en "\033[${bg}m\033[1;$(($f+30))m ${FGNAMES[$f]} "
    done
echo
  echo -e "\033[0m"  
done


# Xterm|rxvt|urxvt title.
case "${TERM}" in
    xterm*|rxvt*)   PROMPT_COMMAND='history -a ; echo -ne "\033]0;${USER}@${HOSTNAME%%.*}: ${PWD}\007"'

    show_command_in_title_bar()
    {
        case "${BASH_COMMAND}" in
            *\033]0*)   ;;
            *)          echo -ne "\033]0;${USER}@${HOSTNAME%%.*}: ${BASH_COMMAND}\007" ;;
        esac
    }
    trap show_command_in_title_bar DEBUG ;;

    *)  PROMPT_COMMAND='history -a' ;;
esac

# PATH do usuário.
export PATH="$PATH:$HOME/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin"

IntÉ!