time runs the command given as its argument and produces a breakdown of total time to execute, total time spent in the user program, and total time spent in system CPU overhead.
Times given are statistical, based on where execution is at a clock tick.
If time successfully invokes command-line, it returns the exit status of command-line; otherwise possible exit status values are:
An error occurred in the time utility.
Failure due to an invalid command line option.
time found command but was unable to invoke it.
time was unable to find command.
time is provided as both an external utility and a built-in
MKS KornShell utility.
The external utility is provided because the shell built-in is not available
to you when you are not running the MKS KornShell or you are running the shell in
ksh mode. You can run the shell in ksh
mode by launching it with the ksh command or by specifying
x/OPEN Portability Guide 4.0. All UNIX systems. Windows 2000. Windows XP. Windows Server 2003. Windows Vista. Windows 7. Windows Server 2008. Windows 8. Windows Server 2012.
MKS Toolkit for Power Users
MKS Toolkit for System Administrators
MKS Toolkit for Developers
MKS Toolkit for Interoperability
MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition
MKS Toolkit 9.5 Documentation Build 3.