timex(1)timex(1)NAMEtimex - time a command; report process data and system activity
reports in seconds the elapsed time, user time, and system time spent
in execution of the given command. Optionally, process accounting data
for command and all its children can be listed or summarized, and total
system activity during the execution interval can be reported.
The output of is written on the standard error. Timex returns an exit
status of 1 if it is used incorrectly, if it is unable to fork, or if
it could not exec command . Otherwise, timex returns the exit status of
Report the total number of blocks read or written and
total characters transferred by command and all
its children. This option works only if the
process accounting software is installed.
List process accounting records for
command and all its children. The suboptions and
modify the data items reported. They behave as
defined in acctcom(1M). The number of blocks
read or written and the number of characters
transferred are always reported.
This option works only if the process accounting
software is installed and has been invoked to
Report total system activity (not just that due to
command) that occurred during the execution
interval of command. All the data items listed
in sar(1M) are reported.
A simple example:
A terminal session of arbitrary complexity can be measured by timing a
Process records associated with command are selected from the account‐
ing file by inference, since process genealogy is not available. Back‐
ground processes having the same user-ID, terminal-ID, and execution
time window are spuriously included.
SEE ALSOsar(1M), acctcom(1M).