problems with time command

voodoo.child · 2007-11-20 23:30:57

I'm trying to use time to time a process, but I have problems with it. It doesn't accept other options than -p (though the manual says it should) and also I cannot redirect it's output. Can anybody help me?

byte · 2007-11-21 01:06:04

The manual describes a binary you don't have. See the bash manpage and search for pipeline; time is described in that paragraph.

voodoo.child · 2007-11-21 10:26:10

how do I get that binary? I really need to reformat my output.

Cerebral · 2007-11-21 13:08:46

You want the time binary? How about trying

pacman -S time

byte · 2007-11-21 14:24:05

man bash wrote:

If the time reserved word precedes a pipeline, the elapsed as well as user and system time consumed by its
execution are reported when the pipeline terminates. The -p option changes the output format to that spec-
ified by POSIX. The TIMEFORMAT variable may be set to a format string that specifies how the timing infor-
mation should be displayed; see the description of TIMEFORMAT under Shell Variables below.
.
.
.
TIMEFORMAT
The value of this parameter is used as a format string specifying how the timing information for
pipelines prefixed with the time reserved word should be displayed. The % character introduces an
escape sequence that is expanded to a time value or other information. The escape sequences and
their meanings are as follows; the braces denote optional portions.
%% A literal %.
%[p][l]R The elapsed time in seconds.
%[p][l]U The number of CPU seconds spent in user mode.
%[p][l]S The number of CPU seconds spent in system mode.
%P The CPU percentage, computed as (%U + %S) / %R.
The optional p is a digit specifying the precision, the number of fractional digits after a decimal
point. A value of 0 causes no decimal point or fraction to be output. At most three places after
the decimal point may be specified; values of p greater than 3 are changed to 3. If p is not speci-
fied, the value 3 is used.
The optional l specifies a longer format, including minutes, of the form MMmSS.FFs. The value of p
determines whether or not the fraction is included.
If this variable is not set, bash acts as if it had the value $'\nreal\t%3lR\nuser\t%3lU\nsys%3lS'.
If the value is null, no timing information is displayed. A trailing newline is added when the for-
mat string is displayed.

Arch Linux

#1 2007-11-20 23:30:57

problems with time command

#2 2007-11-21 01:06:04

Re: problems with time command

#3 2007-11-21 10:26:10

Re: problems with time command

#4 2007-11-21 13:08:46

Re: problems with time command

#5 2007-11-21 14:24:05

Re: problems with time command

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