#!/bin/bash

#    Global bash customization settings
#    Copyright (C) 2018  Pekka Helenius
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

##############################################################################
# In order to use this file, replace the following line in /etc/bash.bashrc file:

# PS1="[\\u@\\h \\W]\\$ "
# 
# with
#
# [[ -f /etc/bash.custom ]] && . /etc/bash.custom || PS1="[\\u@\\h \\W]\\$ "

# Insert/Install this file into /etc folder.

# After that, you can change bash settings globally by editing /etc/bash.custom file

##############################################################################
# Check https://www.cyberciti.biz/tips/howto-linux-unix-bash-shell-setup-prompt.html for more settings

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

# Use server environment settings? Main switch.
# Use only if you implement this solution to a server environment
# You don't need this feature for client/local computers

ENABLE_SERVER_ENV=no

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

# APPLIES ONLY IF SERVER ENVIRONMENT ENABLED

# Retrieve time zone information for every user connected with a SSH client
# Based on a look up for local GeoIP database
# If timezone can't be defined, use UTC time as a fallback value
# Timezone information can be overwritten by exporting TZ variable with
# desirable value as the user in the user-specific $HOME/.bashrc file
#
# This method doesn't require any environment variables delivered via SSH
# connection by a client
# This method doesn't require any modifications to /etc/ssh/sshd_config file.
#
ENABLE_SSH_TIMEZONE=yes

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

# APPLIES ONLY IF SERVER ENVIRONMENT ENABLED

# If server environment is enabled
if [[ $ENABLE_SERVER_ENV == "yes" ]]; then

    if [[ $ENABLE_SSH_TIMEZONE == "yes" ]]; then

        if [[ $(export -p | grep SSH_TTY) ]]; then
            . $(which ssh_timezone)
        fi
    fi
fi

##############################################################################
# Hook to bash's STDERR output so that it will be printed as red for all users
export LD_PRELOAD="/usr/\$LIB/libstderred.so${LD_PRELOAD:+:$LD_PRELOAD}"

##############################################################################
# COLOR TABLE
# These are available colors
# Expand if you wish

# Full color table available by executing 'tputcolors' command

# To get equal color values here, use command 'tput setaf <colorcode> | hexdump -c'

# By default, blank TTY sessions have TERM=linux, which has limitation of 8 possible colors when
# tput is used. On many graphical environments, TERM=xterm-256color is used instead, expanding
# all possible colors to 256.
# Because colors defined in this bash file rely on 256 color support, we must
# export TERM=xterm-256color in all opened shell sessions, including blank TTYs.
#
# Setting raw color values, which are disabled below, does not work well with 
# slash \$ escaped 'bash_foldercolor' function (defined below)
#
# You get count of supported colors with 'tput colors' command
#
export TERM=xterm-256color

bash_red=$(tput setaf 196)
bash_pink=$(tput setaf 211)
bash_green=$(tput setaf 46)
bash_yellow=$(tput setaf 226)
bash_light_yellow=$(tput setaf 229)
bash_gold=$(tput setaf 184)
bash_orange=$(tput setaf 172)
bash_blue=$(tput setaf 27)
bash_light_blue=$(tput setaf 33)
bash_magenta=$(tput setaf 201)
bash_cyan=$(tput setaf 51)
bash_turquoise=$(tput setaf 86)
bash_grey=$(tput setaf 250)
bash_white=$(tput setaf 255)

bash_color_default=$(tput sgr0)

#bash_red="\033[38;5;196m"
#bash_pink="\033[38;5;211"
#bash_green="\033[38;5;46m"
#bash_yellow="\033[38;5;226m"
#bash_light_yellow="\033[38;5;229m"
#bash_gold="\033[38;5;184m"
#bash_orange="\033[38;5;172m"
#bash_blue="\033[38;5;27m"
#bash_light_blue="\033[38;5;33m"
#bash_magenta="\033[38;5;201m"
#bash_cyan="\033[38;5;51m"
#bash_turquoise="\033[38;5;86m"
#bash_grey="\033[38;5;250m"
#bash_white="\033[38;5;255m"

#bash_color_default="\033[0m"

##############################################################################
# COLOR TABLE CHECK FUNCTION

bash_colorstring() {

    case $1 in
        red)
            printf "\x01%s\x02" "${bash_red}"
            ;;
        pink)
            printf "\x01%s\x02" "${bash_pink}"
            ;;
        green)
            printf "\x01%s\x02" "${bash_green}"
            ;;
        yellow)
            printf "\x01%s\x02" "${bash_yellow}"
            ;;
        light_yellow)
            printf "\x01%s\x02" "${bash_light_yellow}"
            ;;
        gold)
            printf "\x01%s\x02" "${bash_gold}"
            ;;
        orange)
            printf "\x01%s\x02" "${bash_orange}"
            ;;
        blue)
            printf "\x01%s\x02" "${bash_blue}"
            ;;
        light_blue)
            printf "\x01%s\x02" "${bash_light_blue}"
            ;;
        magenta|purple)
            printf "\x01%s\x02" "${bash_magenta}"
            ;;
        cyan)
            printf "\x01%s\x02" "${bash_cyan}"
            ;;
        turquoise)
            printf "\x01%s\x02" "${bash_turquoise}"
            ;;
        grey)
            printf "\x01%s\x02" "${bash_grey}"
            ;;
        white)
            printf "\x01%s\x02" "${bash_white}"
            ;;
        default|*)
            printf "\x01%s\x02" "${bash_color_default}"
    esac
}

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

# Original PS1 variable value
#PS1='[\u@\h \W]\$ '

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

# APPLIES ONLY IF SERVER ENVIRONMENT ENABLED

# Different command prompt for local (server) logins?
# Distinguish from SSH logins
# This string does not have any colors for now
# Applies only to tty sessions (sessions without X desktop)

BASH_PS1_DIFFERENT_LOCAL=yes
BASH_PS1_LOCAL='[\u: \W ]\$ '

#######################################
# This is an override switch for all color settings
BASH_PS1_SHOW_COLORS=yes

#######################################
# Start and ending symbols for command prompt

BASH_PS1_START="["
BASH_PS1_START_COLORS=no
BASH_PS1_START_COLOR=$(bash_colorstring default)

BASH_PS1_END=" ]"
BASH_PS1_END_COLORS=no
BASH_PS1_END_COLOR=$(bash_colorstring default)

#######################################
# Override command prompt string?
BASH_PS1_SYNTAX_OVERRIDE=no
BASH_PS1_SYNTAX_OVERRIDESTR='[\u@\h \W]\$ '

#######################################
# Use colors for users?
# Group 'sudo' members are considered as sysadmins.

BASH_USER_COLORS=yes
BASH_SYSADMIN_COLOR=$(bash_colorstring yellow)
BASH_USER_COLOR=$(bash_colorstring default)
BASH_ROOT_COLOR=$(bash_colorstring red)

#######################################
# Use different color for folders owned by the user and some other color for other folders?
BASH_FOLDER_COLORS=yes
BASH_USER_FOLDER_COLOR=$(bash_colorstring green)
BASH_NOTOWNED_FOLDER_COLOR=$(bash_colorstring red)

#######################################
# Colors for ls command?
BASH_LS_COLORS=yes

#######################################
# Show the name of this computer?
BASH_SHOW_HOSTNAME=no

# User and hostname separator settings
BASH_HOSTNAME_SEP="@"
BASH_HOSTNAME_SEP_COLORS=no
BASH_HOSTNAME_SEP_COLOR=$(bash_colorstring gold)

# Use color for hostname?
BASH_HOSTNAME_COLORS=yes
BASH_HOSTNAME_COLOR=$(bash_colorstring blue)

#######################################
# Hostname/user and folder separator settings

BASH_FOLDER_SEP=":"
BASH_FOLDER_SEP_COLORS=no
BASH_FOLDER_SEP_COLOR=$(bash_colorstring default)

#######################################
# Suffix symbol settings

BASH_SUFFIX_SYMBOL="$ "
BASH_SUFFIX_SYMBOL_ROOT="# "
BASH_SUFFIX_COLORS=no
BASH_SUFFIX_COLOR=$(bash_colorstring default)

##############################################################################
# Timestamp

# Show timestamp in the command prompt?
BASH_SHOW_TIMESTAMP=yes

# Example: 26/02/2018 21:33:19
# "\D{%d/%m/%Y} \t"

# Example: 26/02/2018
# "\D{%d/%m/%Y}"

# Example: 21:33:19
# "\t"

BASH_TIMESTAMP_FORMAT=" \! | \D{%d/%m/%Y} \t"
BASH_TIMESTAMP_COLORS=no
BASH_TIMESTAMP_COLOR=$(bash_colorstring default)

#######################################
# Return codes after command execution

# Show command return code in bash?
USE_RETCODE=yes
# Print human readable text strings for each code?
RETCODE_HUMAN=no
# Use colors in error codes?
RETCODE_COLORS=yes

if [[ $USE_RETCODE == "yes" ]]; then

    function RETCODE() {

        local RET=$?

        case $RET in
            0)
                local RETC=$(bash_colorstring green)
                local RETH="ok"
                ;;
            1)
                local RETC=$(bash_colorstring red)
                local RETH="error"
                ;;
            2)
                local RETC=$(bash_colorstring orange)
                local RETH="misuse of shell builtin"
                ;;
            127)
                local RETC=$(bash_colorstring orange)
                local RETH="not found"
                ;;
            128)
                local RETC=$(bash_colorstring red)
                local RETH="invalid exit argument"
                ;;
            130)
                local RETC=$(bash_colorstring purple)
                local RETH="aborted"
                ;;
            *)
                local RETC=$(bash_colorstring yellow)
                local RETH="undefined exit code"
                ;;
        esac

        if [[ $RETCODE_COLORS == "no" ]]; then
            RETC=$(bash_colorstring default)
        fi

        if [[ $RETCODE_HUMAN == "yes" ]]; then
                printf "Return code: ${RETC}$RET - $RETH$(bash_colorstring default)\n"
        else
                printf "Return code: ${RETC}$RET$(bash_colorstring default)\n"
        fi
 
    }
    PROMPT_COMMAND=RETCODE
fi

##############################################################################
# Set up ls command colors
#
if [[ $BASH_PS1_SHOW_COLORS == "yes" ]]; then

    if [[ $BASH_LS_COLORS == "yes" ]]; then
        eval "$(dircolors -b /etc/dircolors)"
        alias ls='ls --color=auto'
    fi
fi

#######################################
# Set up starting and ending symbols
#
if [[ $BASH_PS1_START_COLORS == "yes" ]]; then
    BASH_PS1_START_INSERT="${BASH_PS1_START_COLOR}${BASH_PS1_START}$(bash_colorstring default)"
else
    BASH_PS1_START_INSERT="${BASH_PS1_START}"
fi

if [[ $BASH_PS1_END_COLORS == "yes" ]]; then
    BASH_PS1_END_INSERT="${BASH_PS1_END_COLOR}${BASH_PS1_END}$(bash_colorstring default)"
else
    BASH_PS1_END_INSERT="${BASH_PS1_END}"
fi

#######################################
# Set up folder-specific colors
#
bash_foldercolor() {
    # Change color if we are not owner of the current dir
    # For root we always use green color
    #
    if [[ $BASH_FOLDER_COLORS == "yes" ]]; then
        if [[ $(stat -c %u "$PWD") -eq $(id -u) ]] || [[ $(id -u) -eq 0 ]]; then
            # Green color
            printf "%s" "${BASH_USER_FOLDER_COLOR}"
        else
            # Red color
            printf "%s" "${BASH_NOTOWNED_FOLDER_COLOR}"
        fi
    else
        # White color // reset attributes
        printf "%s" "$(bash_colorstring default)"
    fi
}

#######################################
# Set up user-specific colors
#
bash_usercolor() {

    if [[ $BASH_USER_COLORS == "yes" ]] ;then

        if [[ $(id -u) == 0 ]]; then
            printf "%s" "${BASH_ROOT_COLOR}"
        elif [[ $(groups | grep -o sudo) ]]; then
            printf "%s" "${BASH_SYSADMIN_COLOR}"
        else
            printf "%s" "${BASH_USER_COLOR}"
        fi
    else
        printf "%s" "$(bash_colorstring default)"
    fi
}

#######################################
# Set up computer hostname
#
bash_hostname() {
    if [[ $BASH_SHOW_HOSTNAME == "yes" ]]; then

        if [[ $BASH_HOSTNAME_SEP_COLORS == "yes" ]]; then
            BASH_HOSTNAME_SEP_INSERT="${BASH_HOSTNAME_SEP_COLOR}${BASH_HOSTNAME_SEP}$(bash_colorstring default)"
        else
            BASH_HOSTNAME_SEP_INSERT="${BASH_HOSTNAME_SEP}"
        fi

        if [[ $BASH_HOSTNAME_COLORS == "yes" ]]; then
            printf "%s" "\u$(bash_colorstring default)${BASH_HOSTNAME_SEP_INSERT}${BASH_HOSTNAME_COLOR}\h$(bash_colorstring default)"
        else
            printf "%s" "\u$(bash_colorstring default)${BASH_HOSTNAME_SEP_INSERT}\h"
        fi
    else
        printf "%s" "\u$(bash_colorstring default)"
    fi
}

#######################################
# Set up folder separator
#
bash_folder_separator() {
    if [[ $BASH_FOLDER_SEP_COLORS == "yes" ]] && [[ $BASH_SHOW_HOSTNAME == "yes" ]]; then
        printf "%s" "${BASH_FOLDER_SEP_COLOR}${BASH_FOLDER_SEP}$(bash_colorstring default)"
    else
        printf "%s" "${BASH_FOLDER_SEP}"
    fi
}

#######################################
# Set up timestamp
#
bash_timestamp() {
    if [[ $BASH_SHOW_TIMESTAMP == "yes" ]]; then
        if [[ $BASH_TIMESTAMP_COLORS == "yes" ]]; then
            printf "%s" "${BASH_TIMESTAMP_COLOR}${BASH_TIMESTAMP_FORMAT}$(bash_colorstring default) - "
        else
            printf "%s" "${BASH_TIMESTAMP_FORMAT} - "
        fi
    else
        printf ""
    fi
}

#######################################
# Set up suffix symbol
#
bash_suffixsymbol() {

    if [[ $(id -u) -eq 0 ]]; then
        BASH_SUFFIX=${BASH_SUFFIX_SYMBOL_ROOT}
    else
        BASH_SUFFIX=${BASH_SUFFIX_SYMBOL}
    fi

    if [[ $BASH_SUFFIX_COLORS == "yes" ]]; then
        printf "%s" "${BASH_SUFFIX_COLOR}${BASH_SUFFIX}$(bash_colorstring default)"
    else
        printf "%s" "${BASH_SUFFIX}"
    fi
}

#######################################
# Export command prompt string
#
if [[ $BASH_PS1_SHOW_COLORS != "yes" ]]; then

    BASH_PS1_START_COLORS=$(bash_colorstring default)
    BASH_PS1_END_COLORS=$(bash_colorstring default)

    BASH_USER_COLOR=$(bash_colorstring default)
    BASH_ROOT_COLOR=$(bash_colorstring default)

    BASH_USER_FOLDER_COLOR=$(bash_colorstring default)
    BASH_NOTOWNED_FOLDER_COLOR=$(bash_colorstring default)

    BASH_HOSTNAME_COLOR=$(bash_colorstring default)

    BASH_SUFFIX_COLOR=$(bash_colorstring default)

    BASH_TIMESTAMP_COLOR=$(bash_colorstring default)
fi

ps1_syntax() {
    # Default string
    export PS1="$BASH_PS1_START_INSERT$(bash_timestamp)$(bash_usercolor)$(bash_hostname)$(bash_folder_separator) \$(bash_foldercolor)\W$(bash_colorstring default)$BASH_PS1_END_INSERT$(bash_suffixsymbol)"
}

if [[ $BASH_PS1_SYNTAX_OVERRIDE == "no" ]]; then

    # If we want to use different PS1 variable for local logins...
    if [[ $BASH_PS1_DIFFERENT_LOCAL == "yes" ]] && [[ $ENABLE_SERVER_ENV == "yes" ]]; then

        # Check if we are local login...
        # Returns 0 (true) if we are, otherwise 1 (false)
        if [[ ! $(export -p | grep SSH_TTY) ]]; then
            export PS1=${BASH_PS1_LOCAL}
        else
            ps1_syntax
        fi
    else
        ps1_syntax
    fi

elif [[ $BASH_PS1_SYNTAX_OVERRIDE == "yes" ]]; then

    # User override string
    export PS1=${BASH_PS1_SYNTAX_OVERRIDESTR}

else

    # Fallback string
    export PS1='[\u@\h \W]\$ '
fi

##############################################################################
# Common messages for sudo checks
#

# Ask password every time for sudo commands?
SUDO_ASKPASS=yes

# Separator
function INFO_SEP() {
    # http://wiki.bash-hackers.org/snipplets/print_horizontal_line#a_line_across_the_entire_width_of_the_terminal
    printf '%*s\n' "${COLUMNS:-$(tput cols)}" '' | tr ' ' -
}

# Default information printed to user
INFO_MSG="\
$(bash_colorstring orange)\
Privileged permissions required\
$(bash_colorstring default)\
"
#
# If any of the following messages is printed by a command,
# then try the command with sudo prefix
ERROR_MSGS="\
Permission denied|\
Operation not permitted|\
you cannot perform this operation unless you are root|\
You may not view or modify password information for root\
"

#######################################
# Check if the current user belongs to sudo
# or is root
#
sudocheck() {

    if [[ $UID -ne 0 ]]; then

        if [[ ! $(printf $(groups | grep sudo &> /dev/null)$?) -eq 0 ]]; then
            printf "Current user does not have sufficient permissions and does not belong to 'sudo' group.\n"
            return 1
        else

            if [[ $SUDO_ASKPASS == "yes" ]]; then
                sudo -k
            fi

            return 0
        fi
    else
        return 0
    fi

}

#######################################
# Execute with sudo if no permissions
# to execute a command otherwise
#
# NOTE: This does not work for nano or cd commands
#
trap 'sudoperms' ERR

function sudoperms() {

    # Previous command (ERR) always returns value 1 which is not
    # we don't want if the following sudo command succeeds
    #
    unset PROMPT_COMMAND

    local CMD="${BASH_COMMAND}"
    local i=0

    # WORKAROUND
    # rm command has an interactive prompt where
    # it asks for confirmation for file deletion
    # However, interactive prompt does not work
    # very well here, thus we hook --force/-f
    # option to the original rm command
    #
    if [[ "${CMD}" =~ ^rm[[:space:]] ]]; then
        CMD=$(printf "${CMD}" | sed -E 's/^rm/rm -f/')
    fi

    while [[ $i < 1 ]]; do

        if [[ $(${CMD} 2>&1 > /dev/null | grep -E "${ERROR_MSGS}") ]]; then
            printf "${INFO_MSG}\n"
            sudocheck
            if [[ $? -eq 0 ]]; then
                INFO_SEP

                # Execute the failed command with sudo and get its return code
                sudo bash -c "${CMD}" && RETCODE
            fi
        fi

        let i++
    done

}

#######################################
# If nano doesn't have correct permissions, use sudo
# automatically for it
#
sudonano() {

    # Prevent file names having spaces to be splitted up to
    # multiple arguments by setting local IFS variable to be
    # a newline instead of space
    #
    local IFS=$'\n'

    # Get all input arguments into a new array
    local i=0
    for arg in "${@}"; do
        ARGS[$i]="${arg}"
        let i++
    done

    # If the first argument is not -h or --help, apply other arguments, too
    #
    if [[ "${1}" != "-h" ]] || [[ "${1}" != "--help" ]]; then
        # If the last input argument is a file, delete
        # it from the existing ARGS array
        # and put it into a new variable FILE .
        # Check owner of the file
        #
        # If no input file is given, treat
        # all arguments as options for nano editor
        #
        if [[ -f "${ARGS[-1]}" ]]; then

            # Get full file path (e.g. if user types just 
            # name of a file in the current folder)
            local FILE=$(readlink -f "${ARGS[-1]}")

            # Set single quotes around the file name with full path
            # This is just for stat command below
            #
            local FILE=$(printf "${FILE}" | sed "s/\(.*\)\r/'\1'/g")
            local OWNER=$(stat -c %u "${FILE}")

            # Remove filename from the arguments list since it
            # is not actually an argument we want to supply to
            # nano. We need to treat the filename in a special
            # way unlike other arguments
            #
            unset 'ARGS[${#ARGS[@]}-1]'

            # Add escape prefixes to every whitespace we have
            # in the filename because single quotes are
            # not well preserved when supplying filename
            # to nano command
            #
            if [[ "${FILE}" =~ [[:space:]] ]]; then
                FILE=$(printf "${FILE}" | sed 's/ /\\ /g')
            fi

            # If arguments were given, put them before
            # the filename. If no arguments were given,
            # just supply the filename to nano command
            #
            if [[ -n ${ARGS[*]} ]]; then
                local OPTIONS="${ARGS[*]} ${FILE}"
            else
                local OPTIONS="${FILE}"
            fi
        else
            local OPTIONS="${ARGS[*]}"
        fi
    else
        local OPTIONS="${1}"
    fi

    if [[ $UID -ne 0 ]]; then
        if [[ -v OWNER ]]; then
            if [[ $OWNER -ne $UID ]]; then
                printf "${INFO_MSG}\n"
                sudocheck
                if [[ $? -eq 0 ]]; then
                    INFO_SEP
                    sudo nano ${OPTIONS}
                fi
            else
                nano ${OPTIONS}
            fi
        else
            nano ${OPTIONS}
        fi
    else
        nano ${OPTIONS}
    fi

    # In a case of failure (e.g. return code 1)
    # we want to get the real code number
    # That's why we call RETCODE function
    # which returns the right value for
    # the previous command
    #
    RETCODE

    # We need to unset PROMPT_COMMAND variable
    # after RETCODE function execution
    # Otherwise we get false-positive
    # return value (return code 0) for
    # the previous command, no matter
    # whether it succeeded or failed
    #
    unset PROMPT_COMMAND

}

if [[ $(printf $(which nano &> /dev/null)$?) -eq 0 ]]; then
    alias nano='sudonano'
fi

#######################################
# If find doesn't have correct permissions, use sudo
# automatically for it
#
: '
sudofind() {

    if [[ ! "${1}" =~ ^-{1,2}[a-z]* ]]; then
        if [[ ! -d "${1}" ]]; then
            printf "$(bash_colorstring red)Error:$(bash_colorstring default) ${1}: No such directory\n"
            return 1
        fi
    else
        find "${1}"
    fi

    if [[ $UID -ne 0 ]]; then

        local i=0
        for arg in "${@}"; do
            if [[ $arg =~ [[:space:]] ]]; then
                arg=\"$arg\"
            fi
            local ARGS[$i]="${arg}"
            let i++
        done

        local DIRPATH="${ARGS[0]}"
        local OWNER_STR=$(stat -c %U "${DIRPATH}")
        local USER_STR=$(id -un $UID)

        if [[ $OWNER_STR == $USER_STR ]]; then
            find "${ARGS[*]}"
        else
            sudo SUDOARGS="${ARGS[*]}" -u $OWNER_STR bash -c 'find "${SUDOARGS}"'
        fi
    else
        find "${ARGS[*]}"
    fi

}

alias find='sudofind'
'

#######################################
# If we don't have access to a directory, check dir owner
# and access the folder as that user with sudo
#
sudocd() {

    if [[ -d "${1}" ]]; then

        if [[ $UID -ne 0 ]]; then

            if [[ $(stat -c %u "${1}") -ne $UID ]]; then

                local PERMS=$(stat -c %A "${1}")

                if [[ $(echo "${PERMS:9:1}") == "x" ]]; then
                    cd "${1}"
                else

                    printf "${INFO_MSG}\n"
                    sudocheck
                    if [[ $? -eq 0 ]]; then
                        INFO_SEP
                        local OWNER=$(stat -c %U "${1}")
                        printf "Opening $OWNER shell environment\n"
                        sudo GODIR="${1}" -u $OWNER bash -c 'cd "${GODIR}"; $SHELL'
                    fi
                fi
            else
                cd "${1}"
            fi
        else
            cd "${1}"
        fi
    elif [[ -z "${1}" ]]; then
        cd "${HOME}"
    else
        printf "$(bash_colorstring red)Error:$(bash_colorstring default) No such directory\n"
        return 1
    fi

}

alias cd='sudocd'