.bashrc

# Easier navigation: .., ..., ...., .....
alias ..="cd .."
alias ...="cd ../.."
alias ....="cd ../../.."
alias .....="cd ../../../.."

# Detect which `ls` flavor is in use
if ls --color > /dev/null 2>&1; then # GNU `ls`
  colorflag="--color"
else # OS X `ls`
  colorflag="-G"
fi

# List all files colorized in long format
alias ll="ls -lF ${colorflag}"

# List all files colorized in long format, including dot files
alias la="ls -laF ${colorflag}"

# List only directories
alias lsd="ls -lF ${colorflag} | grep --color=never '^d'"
unset colorflag;

# # Always use color output for `ls`
alias ls="command ls ${colorflag}"

# Always enable colored `grep` output
# Note: `GREP_OPTIONS="--color=auto"` is deprecated, hence the alias usage.
alias grep='grep --color=auto'
alias fgrep='fgrep --color=auto'
alias egrep='egrep --color=auto'