--- Installation of LinuxMINT on a LENOVO laptop--- Custumizing PART-02

[oneshot]

PART-00 PART-01

Make /etc/bash.bashrc a default wide-system config file by deleting (or renaming) ~/.bashrc and /root/.bashrc ad here below how it acually is:

# System-wide .bashrc file for interactive bash(1) shells.

# To enable the settings / commands in this file for login shells as well,
# this file has to be sourced in /etc/profile.

# max-N551VW customized variables
bind '"\e[A"':history-search-backward
bind '"\e[B"':history-search-forward

export HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups
export HISTCONTROL=ignoreboth
export HISTIGNORE='?:??:ls:bg:fg'
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$"\n"}history -a; history -c; history -r"

export EDITOR=vim

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

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

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=35000
HISTFILESIZE=35000


# 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, overwrite the one in /etc/profile)
# but only if not SUDOing and have SUDO_PS1 set; then assume smart user.
#if ! [ -n "${SUDO_USER}" -a -n "${SUDO_PS1}" ]; then
#  PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
#fi

if [[ ${EUID} == 0 ]] ; then
    PS1='\[\033[01;31m\]\h\[\033[01;36m\] \$\[\033[00m\] '
    else
    PS1='\[\033[01;32m\]\h\[\033[01;36m\] \$\[\033[00m\] '
fi


# Commented out, don't overwrite xterm -T "title" -n "icontitle" by default.
# If this is an xterm set the title to user@host:dir
#case "$TERM" in
#xterm*|rxvt*)
#    PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
#    ;;
#*)
#    ;;
#esac

# enable bash completion in interactive shells
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

# sudo hint
if [ ! -e "$HOME/.sudo_as_admin_successful" ] && [ ! -e "$HOME/.hushlogin" ] ; then
    case " $(groups) " in *\ admin\ *|*\ sudo\ *)
    if [ -x /usr/bin/sudo ]; then
    cat <<-EOF
    To run a command as administrator (user "root"), use "sudo <command>".
    See "man sudo_root" for details.
    
    EOF
    fi
    esac
fi

# if the command-not-found package is installed, use it
if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then
    function command_not_found_handle {
            # check because c-n-f could've been removed in the meantime
                if [ -x /usr/lib/command-not-found ]; then
           /usr/lib/command-not-found -- "$1"
                   return $?
                elif [ -x /usr/share/command-not-found/command-not-found ]; then
           /usr/share/command-not-found/command-not-found -- "$1"
                   return $?
        else
           printf "%s: command not found\n" "$1" >&2
           return 127
        fi
    }
fi

-- 07 Nov 2020 Update --

Detected a weird error message while trying to make an import snapshot with the ImageMagick software:

import-im6.q16: attempt to perform an operation not allowed by the security policy 'PS' @...

. Solved the issue by editing the file /etc/ImageMagick-6/policy.xml as follow:
BEFORE

AFTER

-- 05 Dec 2020 Update --

Installed QPDF a command-line program that does structural, content-preserving transformations on PDF files.

^{COMPLETE EXTRA SOFTWARE LIST
QTerminal, Guake, ClipIt, ImageMagick, Gimp, Google-Chrome, Vim, QPDF.}

^{COMPLETE CONFIG FILES LIST
/etc/vim/vimrc, /etc/bash.bashrc.}