if [ "${BASH_SOURCE-}" = "$0" ]; then
    echo -e "You must source this script:\n\tsource $0" >&2
    exit 33
fi

# show hidden files and directories
alias l.='ls -d .[^.]* ..?* --color=tty 2>/dev/null'

if ! which ll 2>/dev/null; then
    alias ll='ls -l --color=auto'
fi

# color less (restricted)
alias less='less -R'

if [[ "$OSTYPE" != darwin* ]]; then
    # long format with ISO dates
    alias lll='ls -Al "--time-style=+%Y-%m-%d %H:%M:%S %4Z"'

    # color ip route
    if ip -V | grep '^ip utility, iproute2-.*, libbpf' &>/dev/null; then
        # EL 8+ - "ip utility, iproute2-6.2.0, libbpf 0.5.0"
        alias ip='ip --color=auto'
    else
        # EL 7 - "ip utility, iproute2-ss170501"
        alias ip='ip -c'
    fi
fi