~/.zshrc

.zshrc

#
# .zshrc
#

# Access custom aliases in the shell
[ -e "${HOME}/.zsh_aliases" ] && source "${HOME}/.zsh_aliases"

# Fix command not found after installation
# https://bbs.archlinux.org/viewtopic.php?id=175388
zstyle ':completion:*' rehash true

# Update shell aliases immediately
ALIAS_FILE="${HOME}/.zsh_aliases"

reload_aliases () {
    # do nothing if there is no $ALIAS_FILE
    [[ -e $ALIAS_FILE ]] || return 1
    # check if $ALIAS_FILE has been modified since last reload
    if [[ $LAST_ALIAS_RELOAD < $(stat -c %Y $ALIAS_FILE) ]]; then
        # remove all aliases; optional!
        # only do this if all of your aliases are defined in $ALIAS_FILE
        # also affects aliases defined on the command line
        unalias -m '*'
        # load aliases
        source $ALIAS_FILE
        # update date of last reload
        LAST_ALIAS_RELOAD=$(date +%s)
    fi
}

# make reload_aliases to be run before each prompt
autoload -Uz add-zsh-hook
add-zsh-hook precmd reload_aliases