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literate-dotfiles/dotfiles/bash.org

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Bash Configuration

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/DIR_COLORS. 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 [B] 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