literate-dotfiles/bash.org

#+TITLE: Bash Configuration
#+SETUPFILE: ./setup/org-setup-file.org
#+PROPERTY: header-args :tangle-mode (identity #o444)

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

** If not running interactively, don't do anything
#+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

** FZF
#+begin_src bash
. /usr/share/doc/fzf/examples/completion.bash
. /usr/share/doc/fzf/examples/key-bindings.bash
#+end_src

** Ignore case for auto-completion
#+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
#+END_SRC

** Some config
#+BEGIN_SRC bash
# Unset some variables
unset use_color safe_term match_lhs sh

# Allow local processes with root privileges to connect to the locally running X server
xhost +local:root > /dev/null 2>&1

# Autocomplete sudo commands
complete -cf sudo

# Line wrap on window resize
shopt -s checkwinsize

# Enable history expansion with space
# E.g. typing !!<space> will replace the !! with your last command
bind Space:magic-space

# Expand Aliases
shopt -s expand_aliases

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

# Enable history appending instead of overwriting
shopt -s histappend

# Save multi-line commands as one command
shopt -s cmdhist
#+END_SRC

** Prompt - =PS1=
#+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

** 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 ls='ls -hN --color=auto --group-directories-first'
alias grep='grep --colour=auto'
alias cp="cp -i"     # confirm before overwriting something
alias df='df -h'     # human-readable sizes
alias free='free -m' # show sizes in MB
alias bat='batcat'
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 o="xdg-open"
#+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

*** 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

*** Other
#+begin_src bash
alias fd="fdfind"
#+end_src

** Functions
*** =colors= - 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

*** =tre= - 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

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

*** =fs= - 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

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

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

#+BEGIN_SRC bash
# Huge history. Doesn't appear to slow things down, so why not?
HISTSIZE=500000
HISTFILESIZE=100000

# Avoid duplicate entries
HISTCONTROL="erasedups:ignoreboth"

# Don't record some commands
export HISTIGNORE="&:[ ]*:exit:ls:bg:fg:history:clear"

# Use standard ISO 8601 timestamp
# %F equivalent to %Y-%m-%d
# %T equivalent to %H:%M:%S (24-hours format)
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

* =~/.bash_profile=
:PROPERTIES:
:header-args:bash: :tangle ~/.bash_profile
:header-args:bash+: :comments both :mkdirp yes
:CUSTOM_ID: bash_profile
: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
:CUSTOM_ID: profile
: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
Enable the keyring for applications run through the terminal
#+begin_src bash
if [ -n "$DESKTOP_SESSION" ];then
    eval $(gnome-keyring-daemon --start)
    export SSH_AUTH_SOCK
fi
#+end_src

** Export some default applications
#+begin_src bash
export EDITOR="nvim"
export TERMINAL="alacritty"
export BROWSER="qutebrowser"
export READER="zathura"
export FILE="ranger"
#+END_SRC

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

*** Latex Path
#+begin_src bash
export TEXMFHOME=$HOME/.local/share/texmf
#+end_src

*** Python Path
#+begin_src bash
export PYTHONPATH="${PYTHONPATH}:/usr/lib/python3.9/site-packages/configobj"
#+end_src

*** Linkding
#+begin_src bash
export LINKDING_URL=`pass nas/linkding_url`
export LINKDING_TOKEN=`pass nas/linkding_token`
#+end_src

** Path
#+begin_src bash
PATH=$HOME/appimages:$PATH
PATH=$HOME/.gem/ruby/2.5.0/bin:$PATH
PATH=$GOPATH:$GOPATH/bin:$PATH
PATH=~/.config/emacs/bin:$PATH
PATH=~/.local/bin:$PATH
PATH=~/.npm-global/bin:$PATH
PATH=~/miniconda3/bin:$PATH
export PATH
#+END_SRC

** Automatically run =startx=
#+begin_src bash
if [ -z "${DISPLAY}" ] && [ "${XDG_VTNR}" -eq 1 ]; then
    exec startx
fi
#+end_src

* =~/.inputrc=
:PROPERTIES:
:header-args: :tangle ~/.inputrc
:header-args+: :comments both :mkdirp yes
:CUSTOM_ID: inputrc
:END:

Completion:
#+BEGIN_SRC conf
# Single tab for autocompletion
set show-all-if-ambiguous on

# Ignore case for completion
set completion-ignore-case on
#+END_SRC

vi mode:
#+BEGIN_SRC conf
# VI mode (works in bash and zsh)
set editing-mode vi

# Show which mode (normal or insert)
set show-mode-in-prompt on

# Show the mode by changing the cursor
set vi-ins-mode-string \1\e[6 q\2
set vi-cmd-mode-string \1\e[2 q\2
#+END_SRC

Key-bindings for vi-mode:
#+BEGIN_SRC conf
set keymap vi-command
# these are for vi-command mode
Control-l: clear-screen
Control-a: beginning-of-line
Control-e: end-of-line
Control-w: "\C-aisudo \C-e"

set keymap vi-insert
# these are for vi-insert mode
Control-l: clear-screen
Control-a: beginning-of-line
Control-e: end-of-line
Control-w: "\C-asudo \C-e"
#+END_SRC

Colorized completion
#+begin_src conf
# Color files by types
set colored-stats On
# Append char to indicate type
set visible-stats On
# Mark symlinked directories
set mark-symlinked-directories On
# Color the common prefix
set colored-completion-prefix On
# Color the common prefix in menu-complete
set menu-complete-display-prefix On
#+end_src

Don't echo =^C= after =Ctrl+C= is pressed.
#+begin_src conf
set echo-control-characters off
#+end_src