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32 .\" @(#)time.1 8.1 (Berkeley) 6/6/93
40 .Nd time command execution
46 .Ar utility Op Ar argument ...
58 writes to the standard error stream,
60 the total time elapsed,
61 the time used to execute the
63 process and the time consumed by system overhead.
65 The following options are available:
66 .Bl -tag -width indent
70 flag is used, append to the specified file rather than overwriting
72 Otherwise, this option has no effect.
74 Print times in a human friendly format.
75 Times are printed in minutes, hours,
76 etc.\& as appropriate.
80 structure are printed as well.
89 flag is not specified, the file will be overwritten.
93 output POSIX.2 compliant (each time is printed on its own line).
96 Some shells may provide a builtin
98 command which is similar or identical to this utility.
107 (see the status argument for
109 signal, the current time the given command is running will be written to the
114 environment variable is used to locate the requested
116 if the name contains no
122 could be timed successfully, its exit status is returned.
125 terminated abnormally, a warning message is output to stderr.
128 was found but could not be run, the exit status is 126.
131 could be found at all, the exit status is 127.
134 encounters any other error, the exit status is between 1 and 125
144 utility is expected to conform to ISO/IEC 9945-2:1993 (``POSIX'').