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bash: improvements to prompt

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PowerUser64 2025-05-06 01:29:18 -07:00
parent 3b28bc4ff5
commit 1ae2422a6b
1 changed files with 70 additions and 27 deletions
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97
.bashrc
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@ -22,12 +22,12 @@ export SHELL_CONFIG_DIR="${SHELL_CONFIG_DIR:-"${XDG_CONFIG_HOME:-"$HOME/.config"
# Change the window title of X terminals
case ${TERM} in
xterm*|rxvt*|Eterm*|aterm|kterm|gnome*|interix|konsole*)
PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\007"'
;;
screen*)
PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\033\\"'
;;
(screen*)
PROMPT_COMMAND=('echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\033\\"')
;;
(xterm*|rxvt*|Eterm*|aterm|kterm|gnome*|interix|konsole*|*)
PROMPT_COMMAND=('echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\007"')
;;
esac
use_color=true
@ -42,33 +42,76 @@ match_lhs=""
[[ -f ~/.dir_colors ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
[[ -z ${match_lhs} ]] \
&& type -P dircolors >/dev/null \
&& match_lhs=$(dircolors --print-database)
&& type -P dircolors >/dev/null \
&& match_lhs=$(dircolors --print-database)
[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true
if ${use_color} ; then
# Enable colors for ls, etc. Prefer ~/.dir_colors #64489
if type -P dircolors >/dev/null ; then
if [[ -f ~/.dir_colors ]] ; then
eval $(dircolors -b ~/.dir_colors)
elif [[ -f /etc/DIR_COLORS ]] ; then
eval $(dircolors -b /etc/DIR_COLORS)
fi
fi
# Enable colors for ls, etc. Prefer ~/.dir_colors #64489
if type -P dircolors >/dev/null ; then
# shellcheck disable=SC2046
if [[ -f ~/.dir_colors ]] ; then
eval $(dircolors -b ~/.dir_colors)
elif [[ -f /etc/DIR_COLORS ]] ; then
eval $(dircolors -b /etc/DIR_COLORS)
fi
fi
# given a list of colors, make variables called `col_COLOR`
# $@ - the color list (color=number)
# $color_mod - a modifier to apply to the color (01 = bold, 00 = nothing)
make_colors() {
for a; do
local -- cname="col_${a%%=*}${modname:+_}${modname:-}"
local -- val="${a#*=}"
local -- ccode="${val}"
declare -g "$cname"='['"$ccode"m
# declare -p "$cname"
done
}
# set prompt (see: man bash -> search for '^PROMPTING')
make_colors \
red=31 green=32 yellow=33 blue=34 purple=35 turquoise=36 white=38 white=37 \
normal=00 bold=01 quiet=02 italic=03 under=04 bg=07 gone=08 strike=09
col_end='(B'
# shellcheck disable=SC2154
if [[ ${EUID} == 0 ]] ; then
# shellcheck disable=
ps1_color1="$col_bold$col_red"
ps1_color2="$col_bold$col_blue"
host='\h'
else
ps1_color1="$col_bold$col_green"
ps1_color2="$col_bold$col_white"
host='\u@\h'
fi
PS1='$ps1_color1['$host'$ps1_color2 \W$ps1_color1]$status\$$col_end '
# assign $status to the exit code of the previous command, color it white on failure
fmt_exit_status() {
# status=$?
case $? in
(0)
status=" "
;;
(*)
status="$col_normal$col_white$?$ps1_color1"
;;
esac
}
PROMPT_COMMAND+=("fmt_exit_status")
if [[ ${EUID} == 0 ]] ; then
PS1='\[\033[01;31m\][\h\[\033[01;36m\] \W\[\033[01;31m\]]\$\[\033[00m\] '
else
PS1='\[\033[01;32m\][\u@\h\[\033[01;37m\] \W\[\033[01;32m\]]\$\[\033[00m\] '
fi
else
if [[ ${EUID} == 0 ]] ; then
# show root@ when we don't have colors
PS1='\u@\h \W \$ '
else
PS1='\u@\h \w \$ '
fi
if [[ ${EUID} == 0 ]] ; then
# show root@ when we don't have colors
PS1='\u@\h \W \$ '
else
PS1='\u@\h \w \$ '
fi
fi
unset use_color safe_term match_lhs sh