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Bash Configuration

Table of Contents

Bashrc

TODO What does that do?

[[ $- != *i* ]] && return

Bash Completion

[ -r /usr/share/bash-completion/bash_completion ] && . /usr/share/bash-completion/bash_completion

Ignore case for autocompletion

bind "set completion-ignore-case on"
bind "set show-all-if-ambiguous on"

Use Color

use_color=true
alias ls='ls -hN --color=auto --group-directories-first'
alias grep='grep --colour=auto'

TODO Set colorful PS1 only on colorful terminals.

dircolors –print-database uses its own built-in database instead of using /etc/DIRCOLORS. Try to use the external file first to take advantage of user additions. Use internal bash globbing instead of external grep binary. 

safe_term=${TERM//[^[:alnum:]]/?}   # sanitize TERM
match_lhs=""
[[ -f ~/.dir_colors   ]] && match_lhs="${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)
[[ $'\n'${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

  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
fi

unset use_color safe_term match_lhs sh

xhost +local:root > /dev/null 2>&1

complete -cf sudo

# Line wrap on window resize
shopt -s checkwinsize

shopt -s expand_aliases

# Auto "cd" when entering just a path
shopt -s autocd

# Enable history appending instead of overwriting
shopt -s histappend

Prompt

export PS1="\[$(tput bold)\]\[$(tput setaf 1)\][\[$(tput setaf 3)\]\u\[$(tput setaf 2)\]@\[$(tput setaf 4)\]\h \[$(tput setaf 5)\]\W\[$(tput setaf 1)\]]\[$(tput setaf 7)\]\\$ \[$(tput sgr0)\]"

SSH Agent

# if ! pgrep -u "$USER" ssh-agent > /dev/null; then
#     ssh-agent > "$XDG_RUNTIME_DIR/ssh-agent.env"
# fi
# if [[ ! "$SSH_AUTH_SOCK" ]]; then
#     eval "$(<"$XDG_RUNTIME_DIR/ssh-agent.env")"
# fi

Rebind up and down arrow keys to search through bash history

bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'

TODO Aliases

Better defaults for some commands

alias cp="cp -i"     # confirm before overwriting something
alias df='df -h'     # human-readable sizes
alias free='free -m' # show sizes in MB
alias mutt="neomutt"
alias tmux='tmux -f $XDG_CONFIG_HOME/tmux/tmux.conf'

One letter aliases

alias r="ranger"
alias t="tmux"
alias v="nvim"
alias sv='sudo -E nvim'
alias g="git"
alias m="neomutt"
alias y="yadm"
alias o="xdg-open"
alias x="sxiv -ft *"

Neovim

command -v nvim >/dev/null && alias vim="nvim" vimdiff="nvim -d" # Use neovim for vim if present.

Magit

# alias magit="emacsclient -create-frame --alternate-editor=\"\" --eval '(magit-status)'"
alias magit="nvim -c MagitOnly"

Vim-like

alias :q=exit
alias :e=nvim

Youtube

alias yt="youtube-dl --add-metadata -ic" # Download video link
alias yta="yt -x -f bestaudio/best" # Download only audio

Print each PATH entry on a separate line

alias path='echo -e ${PATH//:/\\n}'

TODO IP addresses - Remove the use of dig and ifbashig

Use addr instead 

# alias ip="dig +short myip.opendns.com @resolver1.opendns.com"
# alias localip="ip route get 8.8.4.4 | head -1 | awk '{print $7}'"
# alias ips="ifconfig -a | grep -o 'inet6\? \(addr:\)\?\s\?\(\(\([0-9]\+\.\)\{3\}[0-9]\+\)\|[a-fA-F0-9:]\+\)' | awk '{ sub(/inet6? (addr:)? ?/, \"\"); print }'"

TODO Functions

Display colors

colors() {
  local fgc bgc vals seq0

  printf "Color escapes are %s\n" '\e[${value};...;${value}m'
  printf "Values 30..37 are \e[33mforeground colors\e[m\n"
  printf "Values 40..47 are \e[43mbackground colors\e[m\n"
  printf "Value  1 gives a  \e[1mbold-faced look\e[m\n\n"

  # foreground colors
  for fgc in {30..37}; do
    # background colors
    for bgc in {40..47}; do
      fgc=${fgc#37} # white
      bgc=${bgc#40} # black

      vals="${fgc:+$fgc;}${bgc}"
      vals=${vals%%;}

      seq0="${vals:+\e[${vals}m}"
      printf "  %-9s" "${seq0:-(default)}"
      printf " ${seq0}TEXT\e[m"
      printf " \e[${vals:+${vals+$vals;}}1mBOLD\e[m"
    done
    echo; echo
  done
}

TODO Meteo - Is Dig mandatory?

To install dig, use yay -S bind-tools 

meteo() {
  if [ -n "$*" ]; then
    address="wttr.in/"
    address+=$*
    address+="?lang=fr"
    curl "$address"
  else
    address="wttr.in/"
    address+=$(ip)
    address+="?lang=fr"
    curl "$address"
  fi
}
alias meteo=meteo

TODO Upload using transfer.sh

upload() {
  # write to output to tmpfile because of progress bar
  tmpfile=$(mktemp -t transferXXX)
  # basefile=$(basename "$1" | sed -e 's/[^a-zA-Z0-9]/-/g')
  curl --progress-bar --upload-file "$1" "https://transfer.sh/" >> $tmpfile;
  cat $tmpfile | xclip -selection clipboard;
  echo "Copied:" $(cat $tmpfile);
  rm -f $tmpfile;
}
alias upload=upload

TODO Upload alternative

transfer() {
curl --progress-bar --upload-file "$1" https://transfer.sh/$(basename $1) | xclip -in -selection clipboard;
}
alias transfer=transfer

Extract archive

usage: ex <file> 

ex ()
{
  if [ -f $1 ] ; then
    case $1 in
      *.tar.bz2)   tar xjf $1   ;;
      *.tar.gz)    tar xzf $1   ;;
      *.bz2)       bunzip2 $1   ;;
      *.rar)       unrar x $1     ;;
      *.gz)        gunzip $1    ;;
      *.tar)       tar xf $1    ;;
      *.tbz2)      tar xjf $1   ;;
      *.tgz)       tar xzf $1   ;;
      *.zip)       unzip $1     ;;
      *.Z)         uncompress $1;;
      *.7z)        7z x $1      ;;
      *)           echo "'$1' cannot be extracted via ex()" ;;
    esac
  else
    echo "'$1' is not a valid file"
  fi
}

Tree display

tre is a shorthand for tree with hidden files and color enabled, ignoring the .git directory, listing directories first. The output gets piped into less with options to preserve color and line numbers, unless the output is small enough for one screen. 

function tre() {
  tree -aC -I '.git|node_modules|bower_components' --dirsfirst "$@" | less -FRNX;
}

Create a new directory and enter it

function mkd() {
  mkdir -p "$@" && cd "$_";
}

Filesize of directory

function fs() {
  if du -b /dev/null > /dev/null 2>&1; then
    local arg=-sbh;
  else
    local arg=-sh;
  fi
  if [[ -n "$@" ]]; then
    du $arg -- "$@";
  else
    du $arg .[^.]* ./*;
  fi;
}

Redirect both standard output and standard error, as well as sending to background

function nullify() {
  "$@" >/dev/null 2>&1
}

Send SMS

https://doronbehar.com/articles/using-kdeconnect-to-comfortably-send-sms-messages-from-the-shell/#kdeconnects-builtin-sms-interface 

sms(){
    local args="$@"
    # local phone_number name phone_type
    # khard phone --parsable | sort -u | fzf | IFS=$'\t' read -r phone_number name phone_type
    local phone_number=$(khard phone --parsable | sort -u | fzf | cut -f1 -d$'\t')
    if [[ -z "${phone_number}" ]]; then
        echo No recipient was chosen >&2
        return
    else
        # echo "${name}"$'\t'"${phone_number}"$'\t'"${phone_type}" > ${_KDECONNECT_SMS_LAST_RECIPIENT}
        kdeconnect-cli --send-sms "${args}" --destination "${phone_number}" --device 4de3b5de2264a17c
        # kdeconnect-cli --device ${_KDECONNECT_DEFAULT_DEVICE} --send-sms "${args}" --destination "${phone_number}" && \
        # echo sent sms message to ${name} | fribidi
    fi
}

Bash History

Undocumented feature which sets the size to “unlimited”. http://stackoverflow.com/questions/9457233/unlimited-bash-history 

export HISTFILESIZE=
export HISTSIZE=
export HISTTIMEFORMAT="[%F %T] "

Change the file location because certain bash sessions truncate .bash_history file upon close. http://superuser.com/questions/575479/bash-history-truncated-to-500-lines-on-each-login 

export HISTFILE=~/.bash_eternal_history

Force prompt to write history after every command. http://superuser.com/questions/20900/bash-history-loss 

PROMPT_COMMAND="history -a; $PROMPT_COMMAND"

Bash Profile

[[ -f ~/.profile ]] && . ~/.profile
[[ -f ~/.bashrc ]] && . ~/.bashrc

Profile

QT And GTK Themes

export QT_QPA_PLATFORMTHEME="qt5ct"
export GTK2_RC_FILES="$HOME/.gtkrc-2.0"

Gui program to ask for sudo password

export SUDO_ASKPASS=~/bin/askpass-rofi

Default

export EDITOR="nvim"
export TERMINAL="termite"
export BROWSER="qutebrowser"
export READER="zathura"
export FILE="ranger"

Exports

export TERM=xterm-256color

XDG Default

export XDG_CONFIG_HOME="$HOME/.config"

Better yaourt colors

export YAOURT_COLORS="nb=1:pkg=1:ver=1;32:lver=1;45:installed=1;42:grp=1;34:od=1;41;5:votes=1;44:dsc=0:other=1;35"

Use Ripgrep for FZF

export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow --glob "!.git/*"'
export FZF_DEFAULT_OPTS='--layout=reverse --height=20'

Goland

export GOPATH=$HOME/go

SSH Agent

export SSH_AUTH_SOCK="${XDG_RUNTIME_DIR}/ssh-agent.socket"

Path

PATH=$HOME/appimages:$PATH
PATH=$HOME/.gem/ruby/2.5.0/bin:$PATH
PATH=$GOPATH:$GOPATH/bin:$PATH
PATH=~/bin:$PATH
PATH=~/.emacs.d/bin:$PATH
export PATH

Author: Dehaeze Thomas

Created: 2020-01-11 sam. 22:00