bashrc

# vi mode
set -o vi

# Check the window size after each command and, if necessary, update the values of LINES and COLUMNS
shopt -s checkwinsize

# turn off suspend 
stty -ixon

# prevent files from being overridden 
shopt -o noclobber

# Ignore case on auto-completion
# Note: bind used instead of sticking these in .inputrc
iatest=$(expr index "$-" i)
if [[ $iatest > 0 ]]; then bind "set completion-ignore-case on"; fi

# Show auto-completion list automatically without double tab, cycle through options
if [[ $iatest > 0 ]]; then 
        bind '"TAB":menu-complete'
        bind "set show-all-if-ambiguous on"
        bind "set completion-ignore-case on"
        bind "set menu-complete-display-prefix on"
fi

# correct minor spelling mistakes in cd commands
shopt -s cdspell

# automatically cd without using cd
shopt -s autocd

# setup for /bin/ls and /bin/grep to support color
if [ -f "/etc/dircolors" ] ; then
        eval $(dircolors -b /etc/dircolors)
fi

if [ -f "$HOME/.dircolors" ] ; then
        eval $(dircolors -b $HOME/.dircolors)
fi

# Enable bash programmable completion features in interactive shells
if [ -f /usr/share/bash-completion/bash_completion ]; then
	. /usr/share/bash-completion/bash_completion
elif [ -f /etc/bash_completion ]; then
	. /etc/bash_completion
fi

# search through history with up/down arrows
bind '"\e[A": history-search-backward' 2>/dev/null
bind '"\e[B": history-search-forward' 2>/dev/null

# ignore commands starting with a space and duplicates from being added to history 
HISTCONTROL=ignoreboth:erasedups
# append to the history file when shell is exited 
shopt -s histappend
# set size of history 
HISTFILESIZE=1000000
HISTSIZE=1000000
# specifically ignore certain commands
HISTIGNORE="&:history:ls:ll:la:ls * ps:ps -A:[bf]g:exit"
# format the history file with a timestamp
HISTTIMEFORMAT='%F %T '
# force multi-line commands to be historized as one line
shopt -s cmdhist
# add to the history as commands are entered, not when exiting the shell
PROMPT_COMMAND='history -a'
# view the history expansion before executing it
shopt -s histverify

# color in grep
# GREP_OPTIONS is deprecated
# export GREP_OPTIONS=' — color=auto'

# set vim as the default editor
export EDITOR=vim

# set less to ignore case, use long prompt, exit if it fits on one screen, and allow colors for ls and grep
export LESS="-iMFXR"

# aliases
# Additional alias sourced from ~/.bash_aliases,
# instead of adding them here directly.
if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

alias ..='cd ..'
alias ...='cd ../..'
alias ....='cd ../../..'
alias .....='cd ../../../..'


alias h='history | grep '
alias q='exit'
alias c='clear'

alias la='ls -a'
alias ll='ls -l'

alias mkdir='mkdir -p'
alias ps='ps auxf'
alias ping='ping -c 5'
alias sha1='openssl sha1'

# 'e' for edit, 's' for source; 
# so 'ev' implies 'edit vim'. 
alias ev='vim ~/.vimrc'
alias eb='vim ~/.bashrc'
alias sb='source ~/.bashrc'

## Compression function 
compress() {
    FILE=$1
    shift
    case $FILE in
        *.tar.bz2) tar cjf $FILE $*  ;;
        *.tar.gz)  tar czf $FILE $*  ;;
        *.tgz)     tar czf $FILE $*  ;;
        *.zip)     zip $FILE $*      ;;
        *.rar)     rar $FILE $*      ;;
        *)         echo "Filetype not recognized" ;;
   esac
}

## Extract Function, assumes dependencies are installed
extract () {
    if [ -f $1 ] ; then
        case $1 in
            *.tar.bz2)   tar xjf $1     ;;
            *.tar.gz)    tar xzf $1     ;;
            *.bz2)       bunzip2 $1     ;;
            *.rar)       unrar e $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 extract()" ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}