literate-dotfiles/dotfiles/bash.org

#+TITLE: Bash Configuration

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

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

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

** Change the window title of X terminals
#+BEGIN_SRC conf
case ${TERM} in
  xterm*|rxvt*|Eterm*|aterm|kterm|gnome*|interix|konsole*)
    PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\007"'
    ;;
  screen*)
    PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\033\\"'
    ;;
esac
#+END_SRC

** Use Color
#+BEGIN_SRC conf
use_color=true
#+END_SRC

** 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.

#+BEGIN_SRC conf
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

  alias ls='ls --color=auto'
  alias grep='grep --colour=auto'
  alias egrep='egrep --colour=auto'
  alias fgrep='fgrep --colour=auto'
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

#+BEGIN_SRC conf
unset use_color safe_term match_lhs sh
#+END_SRC

#+BEGIN_SRC conf
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

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

** Aliases
*** Better defaults for some commands
#+BEGIN_SRC conf
  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"
#+END_SRC

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

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

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

*** Youtube
#+BEGIN_SRC conf
  alias yt="youtube-dl --add-metadata -ic" # Download video link
  alias yta="yt -x -f bestaudio/best" # Download only audio
#+END_SRC

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

*** TODO [#B] IP addresses - Remove the use of =dig= and =ifconfig=
Use =addr= instead
#+BEGIN_SRC conf
  # 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 }'"
#+END_SRC

** Functions
*** Display colors
#+BEGIN_SRC conf
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

*** TODO Meteo - Is Dig mandatory?
To install =dig=, use =yay -S bind-tools=

#+BEGIN_SRC conf
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
#+END_SRC

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

*** TODO Upload alternative
#+BEGIN_SRC conf
transfer() {
  curl --progress-bar --upload-file "$1" https://transfer.sh/$(basename $1) | xclip -in -selection clipboard;
}
alias transfer=transfer
#+END_SRC

*** Extract archive
usage: ex <file>

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

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

*** Filesize of directory
#+BEGIN_SRC conf
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 conf
function nullify() {
  "$@" >/dev/null 2>&1
}
#+END_SRC

** Prompt
#+BEGIN_SRC conf
if [ "`id -u`" -eq 0 ]; then
    PS1="\[\033[m\]|\[\033[1;35m\]\t\[\033[m\]|\[\e[1;31m\]\u\[\e[1;36m\]\[\033[m\]@\[\e[1;36m\]\h\[\033[m\]:\[\e[0m\]\[\e[1;32m\][\W]> \[\e[0m\]"
else
    PS1="\[\033[m\]|\[\033[1;35m\]\t\[\033[m\]|\[\e[1m\]\u\[\e[1;36m\]\[\033[m\]@\[\e[1;36m\]\h\[\033[m\]:\[\e[0m\]\[\e[1;32m\][\W]> \[\e[0m\]"
fi
#+END_SRC

** Exports
*** Better yaourt colors
#+BEGIN_SRC conf
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 conf
export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow --glob "!.git/*"'
#+END_SRC

*** Goland
#+BEGIN_SRC conf
  export GOPATH=$HOME/go
  PATH=$GOPATH:$GOPATH/bin:$PATH
  export PATH
#+END_SRC

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

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

** Base16 Shell
#+BEGIN_SRC conf
BASE16_SHELL="$HOME/.base16-manager/chriskempson/base16-shell/"
[ -n "$PS1" ] && \
[ -s "$BASE16_SHELL/profile_helper.sh" ] && \
eval "$("$BASE16_SHELL/profile_helper.sh")"
#+END_SRC

* Bash Profile
  :PROPERTIES:
  :header-args:conf: :tangle ~/.bash_profile
  :header-args:conf+: :comments both :mkdirp yes
  :END:
** Ignore case for autocompletion
#+BEGIN_SRC conf
bind "set completion-ignore-case on"
bind "set show-all-if-ambiguous on"
#+END_SRC

** Source bashrc
#+BEGIN_SRC conf
[[ -f ~/.bashrc ]] && . ~/.bashrc
#+END_SRC

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

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

** Gui program to ask for sudo password
#+BEGIN_SRC conf
export SUDO_ASKPASS=~/bin/askpass-rofi
#+END_SRC

** Default
#+BEGIN_SRC conf
export EDITOR=/usr/bin/nvim
export BROWSER=/usr/bin/qutebrowser
#+END_SRC

** Path
#+BEGIN_SRC conf
  PATH=$HOME/appimages:$PATH
  PATH=$HOME/.gem/ruby/2.5.0/bin:$PATH
  PATH=~/bin:$PATH
  export PATH
#+END_SRC