Change the output format of zsh's time

I've just switched to zsh. However, I really don't like how the time builtin command also outputs the command that it's timing. I much prefer the bash style output. Anyone know how to switch it over?

Zsh:

[casqa1:~/temp]$ time grep foo /dev/null
/usr/local/gnu/bin/grep --color -i foo /dev/null 0.00s user 0.00s system 53% cpu 0.004 total

Bash:

[casqa1:~/temp]$ bash
casqa1.nyc:~/temp> time grep foo /dev/null
real 0.0
user 0.0
sys 0.0

Thanks,

/YGA

3 Answers

This is fairly close:

$ TIMEFMT=$'\nreal\t%E\nuser\t%U\nsys\t%S'
$ time sleep 1
real 1.01s
user 0.00s
sys 0.00s

Another option is to disable the builtin command and use the time binary provided by your operating system. I have the following in my .zshrc:

disable -r time # disable shell reserved word
alias time='time -p ' # -p for POSIX output

This way time outputs to STDERR.

Just a small precision regarding Dennis Williamson's very useful answer (the "fairly close" part): bash's built-in time outputs to stderr, while zsh's outputs to stdout.

This command can illustrate the difference: time (echo abc) 2>/dev/null

In bash, it outputs:

 $ time (echo abc) 2>/dev/null abc

In zsh, with the suggested TIMEFMT variable:

 $ time (echo abc) 2>/dev/null abc real 0.00s user 0.00s sys 0.00s