literate-dotfiles/dotfiles/bash.org

#+TITLE: Bash Configuration
:DRAWER:
#+STARTUP: overview

#+LANGUAGE: en
#+EMAIL: dehaeze.thomas@gmail.com
#+AUTHOR: Dehaeze Thomas

#+HTML_LINK_HOME: ./index.html
#+HTML_LINK_UP: ./index.html

#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="./css/htmlize.css"/>
#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="./css/readtheorg.css"/>
#+HTML_HEAD: <script type="text/javascript" src="./js/jquery.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/bootstrap.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/jquery.stickytableheaders.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/readtheorg.js"></script>
:END:

* Bashrc
:PROPERTIES:
:header-args:bash: :tangle ~/.bashrc
:header-args:bash+: :comments both :mkdirp yes
:END:

** What does that do?
#+BEGIN_SRC bash
[[ $- != *i* ]] && return
#+END_SRC

** Bash Completion
#+BEGIN_SRC bash
[ -r /usr/share/bash-completion/bash_completion ] && . /usr/share/bash-completion/bash_completion
#+END_SRC

** Ignore case for autocompletion
#+BEGIN_SRC bash
bind "set completion-ignore-case on"
bind "set show-all-if-ambiguous on"
#+END_SRC

** Use Color
#+BEGIN_SRC bash
  use_color=true
  alias ls='ls -hN --color=auto --group-directories-first'
  alias grep='grep --colour=auto'
#+END_SRC

** 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.

#+BEGIN_SRC bash
  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
#+END_SRC

** Some config
#+BEGIN_SRC bash
  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
#+END_SRC

** Prompt
#+BEGIN_SRC bash
  export PS1="\[$(tput bold)\]\[$(tput setaf 1)\][\[$(tput setaf 3)\]\u\[$(tput setaf 2)\]@\[$(tput setaf 4)\]\h \[$(tput setaf 5)\]\W\[$(tput setaf 1)\]]\[$(tput setaf 7)\]\\$ \[$(tput sgr0)\]"
#+END_SRC

** SSH Agent
#+begin_src bash
# 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
#+end_src

** Rebind up and down arrow keys to search through bash history
#+BEGIN_SRC bash
bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'
#+END_SRC

** Aliases
*** Better defaults for some commands
#+BEGIN_SRC bash
  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'
#+END_SRC

*** One letter aliases
#+BEGIN_SRC bash
  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 *"
#+END_SRC

*** Neovim
#+begin_src bash
  command -v nvim >/dev/null && alias vim="nvim" vimdiff="nvim -d" # Use neovim for vim if present.
#+end_src

*** Magit
#+BEGIN_SRC bash
  # alias magit="emacsclient -create-frame --alternate-editor=\"\" --eval '(magit-status)'"
  alias magit="nvim -c MagitOnly"
#+END_SRC

*** Vim-like
#+BEGIN_SRC bash
  alias :q=exit
  alias :e=nvim
#+END_SRC

*** Print each PATH entry on a separate line
#+BEGIN_SRC bash
  alias path='echo -e ${PATH//:/\\n}'
#+END_SRC

** Functions
*** Display colors
#+BEGIN_SRC bash
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
}
#+END_SRC

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

*** Upload using transfer.sh
#+BEGIN_SRC bash
  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 | xsel -ib;
    echo "Copied:" $(cat $tmpfile);
    rm -f $tmpfile;
  }
  alias upload=upload
#+END_SRC

*** Extract archive
usage: ex <file>

#+BEGIN_SRC bash
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
}
#+END_SRC

*** 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.

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

*** Create a new directory and enter it
#+BEGIN_SRC bash
function mkd() {
  mkdir -p "$@" && cd "$_";
}
#+END_SRC

*** Filesize of directory
#+BEGIN_SRC bash
  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;
  }
#+END_SRC

*** Redirect both standard output and standard error, as well as sending to background
#+BEGIN_SRC bash
  function nullify() {
    "$@" >/dev/null 2>&1
  }
#+END_SRC

*** Send SMS
https://doronbehar.com/articles/using-kdeconnect-to-comfortably-send-sms-messages-from-the-shell/#kdeconnects-builtin-sms-interface
#+begin_src bash
  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
  }

#+end_src
** Bash History
Undocumented feature which sets the size to "unlimited". http://stackoverflow.com/questions/9457233/unlimited-bash-history

#+BEGIN_SRC bash
  export HISTFILESIZE=
  export HISTSIZE=
  export HISTTIMEFORMAT="[%F %T] "
#+END_SRC

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

#+BEGIN_SRC bash
  export HISTFILE=~/.bash_eternal_history
#+END_SRC

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

#+BEGIN_SRC bash
  PROMPT_COMMAND="history -a; $PROMPT_COMMAND"
#+END_SRC

** Starship Prompt
#+begin_src bash
  eval "$(starship init bash)"
#+end_src

* Bash Profile
:PROPERTIES:
:header-args:bash: :tangle ~/.bash_profile
:header-args:bash+: :comments both :mkdirp yes
:END:

#+BEGIN_SRC bash
  [[ -f ~/.profile ]] && . ~/.profile
  [[ -f ~/.bashrc ]] && . ~/.bashrc
#+END_SRC

* Profile
:PROPERTIES:
:header-args:bash: :tangle ~/.profile
:header-args:bash+: :comments both :mkdirp yes
:END:

** QT And GTK Themes
#+begin_src bash
  export QT_QPA_PLATFORMTHEME="qt5ct"
  export GTK2_RC_FILES="$HOME/.gtkrc-2.0"
#+END_SRC

** Gui program to ask for sudo password
#+begin_src bash
  export SUDO_ASKPASS=~/.local/bin/askpass-rofi
#+END_SRC

** Gnome Keyring Daemon
#+begin_src bash
  if [ -n "$DESKTOP_SESSION" ];then
      eval $(gnome-keyring-daemon --start)
      export SSH_AUTH_SOCK
  fi
#+end_src

** Default
#+begin_src bash
  export EDITOR="nvim"
  export TERMINAL="termite"
  export BROWSER="qutebrowser"
  export READER="zathura"
  export FILE="ranger"
#+END_SRC

** Exports
#+begin_src bash
  export TERM=xterm-256color
#+END_SRC

*** XDG Default
#+begin_src bash
  export XDG_CONFIG_HOME="$HOME/.config"
#+end_src

*** Better yaourt colors
#+begin_src bash
  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"
#+END_SRC

*** Use Ripgrep for FZF
#+begin_src bash
  export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow --glob "!.git/*"'
  export FZF_DEFAULT_OPTS='--layout=reverse --height=20'
#+END_SRC

*** Goland
#+begin_src bash
  export GOPATH=$HOME/go
#+END_SRC

** Path
#+begin_src bash
  PATH=$HOME/appimages:$PATH
  PATH=$HOME/.gem/ruby/2.5.0/bin:$PATH
  PATH=$GOPATH:$GOPATH/bin:$PATH
  PATH=~/.local/bin:$PATH
  PATH=~/.emacs.d/bin:$PATH
  export PATH
#+END_SRC