Timestamp your command output with zsh

ts.zsh

ts() {
    local tspty=tspty.$(/usr/bin/uuidgen)
    zmodload zsh/zpty
    zpty $tspty $@
    setopt localtraps
    TRAPINT() { zpty -d $tspty }
    while zpty -r $tspty line; do
        print -Pn '%B%D{%m/%d %H:%M:%S}%b '
        print -n -- $line
    done
}