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.IX Title "TS 1"
.TH TS 1 2024-02-25 moreutils " "
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.SH NAME
ts \- timestamp input
.SH SYNOPSIS
.IX Header "SYNOPSIS"
ts [\-r] [\-i | \-s] [\-m] [format]
.SH DESCRIPTION
.IX Header "DESCRIPTION"
ts adds a timestamp to the beginning of each line of input.
.PP
The optional format parameter controls how the timestamp is formatted,
as used by \fBstrftime\fR\|(3). The default format is "%b \f(CW%d\fR \f(CW%H:\fR%M:%S". In
addition to the regular strftime conversion specifications, 
"%.S" and "%.s" and "%.T"
are like "%S" and "%s" and "%T", but provide subsecond resolution
(ie, "30.00001" and "1301682593.00001" and "1:15:30.00001").
.PP
If the \-r switch is passed, it instead converts existing timestamps in
the input to relative times, such as "15m5s ago". Many common timestamp
formats are supported. Note that the Time::Duration and Date::Parse perl
modules are required for this mode to work. Currently, converting localized
dates is not supported.
.PP
If both \-r and a format is passed, the existing timestamps are
converted to the specified format.
.PP
If the \-i or \-s switch is passed, ts reports incremental timestamps instead of
absolute ones. The default format changes to "%H:%M:%S", and "%.S" and "%.s" can
be used as well. In case of \-i, every timestamp will be the time elapsed since
the last timestamp. In case of \-s, the time elapsed since start of the program
is used.
.PP
The \-m switch makes the system's monotonic clock be used.
.SH ENVIRONMENT
.IX Header "ENVIRONMENT"
The standard TZ environment variable controls what time zone dates
are assumed to be in, if a timezone is not specified as part of the date.
.SH AUTHOR
.IX Header "AUTHOR"
Copyright 2006 by Joey Hess <id@joeyh.name>
.PP
Licensed under the GNU GPL.