bashrc - linux snippets thereof...

.bashrc

# a decent bash prompt
# \d = date - \t = time - \u = user - \h = host - \w = cwd

PS1='\[\e[1;32m\][\[\e[1;33m\]\d \[\e[1;34m\]\t \[\e[1;32m\]\u\[\e[1;36m\]@\[\e[1;31m\]\h\[\e[1;33m\](\[\e[1;36m\]\w\[\e[1;33m\])\[\e[1;32m\]]\[\e[1;37m\]% \e[m'

# disk usage 
alias diskspace="du -Sh | sort -n -r |more"

# move up directories (i.e. "up" or "up 3")
up(){
  local d=""
  limit=$1
  for ((i=1 ; i <= limit ; i++))
    do
      d=$d/..
    done
  d=$(echo $d | sed 's/^\///')
  if [ -z "$d" ]; then
    d=..
  fi
  cd $d
}

# yyyy/mm/dd/hh/mm/ss/ffffff
alias now='date "+%Y_%m_%d_%H_%M_%S.%6N"'

# look busy
alias busy='cat /dev/urandom | hexdump -C | grep "ca fe"'

# empty trash
alias droptrash="rm -fr ~/.Trash"

# create DIR then CD into it...
function mkcdr {
    mkdir -p -v $1
    cd $1
}

# Alias chmod commands
alias mx='chmod a+x'
alias 000='chmod 000'
alias 644='chmod 644'
alias 755='chmod 755'

# exit bash session
alias x='exit'

# make cp and mv interactive and verbose given I'm a Linux novice...
alias cp='cp -iv'
alias mv='mv -iv'

# python virtualenv activate\deactivate
alias va='source bin/activate'
alias vd='deactivate'