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# Dynamic PS1: exit code, time, user, current directory, git, colorized
function update_ps1 {
local exit_code=$?
# Color exit code: green if 0, red otherwise
if [[ $exit_code -eq 0 ]]; then
local exit_display="\[\033[1;32m\]$exit_code\[\033[0m\]" # green
else
local exit_display="\[\033[1;31m\]$exit_code\[\033[0m\]" # red
fi
# Symbol always white
local symbol="\[\033[1;37m\]\$\[\033[0m\]"
# White brackets
local open_bracket="\[\033[1;37m\][\[\033[0m\]"
local close_bracket="\[\033[1;37m\]]\[\033[0m\]"
# Time in HH:MM:SS
#local time="\[\033[1;37m\]\t\[\033[0m\]"
# User
# Colors depends on the id of the user.
# red = root (id 0)
if [ $(id -u) -eq 0 ]; then
local user="\[\033[1;31m\]\u\[\033[0m\]"
else
local user="\[\033[1;36m\]\u\[\033[0m\]"
fi
# Current folder only, ~ for home
local folder="\[\033[1;33m\]\W\[\033[0m\]"
# Git status
local git_status=""
if [[ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" == true ]]; then
if [[ -z $(git log origin/master..HEAD 2>/dev/null) ]]; then
git_status="\[\033[1;38;5;10m\](git)\[\033[0m\]" # green if up to date
else
git_status="\[\033[1;38;5;9m\](git)\[\033[0m\]" # red if ahead
fi
fi
# Build the prompt
export PS1="${open_bracket} ${exit_display} ${user} ${folder} ${git_status}${close_bracket} ${symbol} "
}
# Update PS1 after every command
PROMPT_COMMAND='update_ps1'
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