08-27-2008
There is not normally any way to recover the PID of a process after it's removed from the process table. Some process-accounting add-ons such as sar might be able to provide you with this information.
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timex(1) General Commands Manual timex(1)
NAME
timex - time a command; report process data and system activity
SYNOPSIS
command
DESCRIPTION
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 command.
Options
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 soft-
ware 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 acct-
com(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 create
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.
EXAMPLES
A simple example:
A terminal session of arbitrary complexity can be measured by timing a sub-shell:
session commands
EOT
WARNINGS
Process records associated with command are selected from the accounting file by inference, since process genealogy is not available.
Background processes having the same user-ID, terminal-ID, and execution time window are spuriously included.
SEE ALSO
sar(1M), acctcom(1M).
STANDARDS CONFORMANCE
timex(1)