04-20-2011
Filter date and time form a file using sed command
I want to filter out the date and time from this line in a file. How to do this using sed command.
on Tue Apr 19 00:48:29 2011
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LEARN ABOUT DEBIAN
datefudge
DATEFUDGE(1) Debian DATEFUDGE(1)
NAME
datefudge - pretend the system time is different
SYNOPSIS
datefudge [-s|--static] at_date program [arguments ...]
DESCRIPTION
datefudge is a small utility that pretends that the system time is different by pre-loading a small library which modifies the time(2),
gettimeofday(2) and clock_gettime(2) system calls.
OPTIONS
--static, -s
set date as a `static' one. The above mentioned system calls will always return the date passed as a parameter of the program
regardless of time passing. See EXAMPLES below.
--help, -h
print short usage information and exit.
--version, -v
print version information and exit.
EXAMPLES
Basic example:
$ datefudge "2007-04-01 10:23" date -R
Sun, 01 Apr 2007 10:23:00 +0200
Non-static vs. static example:
$ datefudge "2007-04-01 10:23" sh -c "sleep 3; date -R"
Sun, 01 Apr 2007 10:23:03 +0200
$ datefudge --static "2007-04-01 10:23" sh -c "sleep 3; date -R"
Sun, 01 Apr 2007 10:23:00 +0200
AUTHOR
Written by Matthias Urlichs <smurf@noris.de>. Modified by Robert Luberda <robert@debian.org>.
BUGS
There is no attempt to make this change undetectable by the program. In particular, file modification times are not modified.
COPYRIGHT
Copyright (C) 2003 by Matthias Urlichs.
Copyright (C) 2008-2011 by Robert Luberda.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of datefudge under the
terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
SEE ALSO
ld.so(1), time(2), gettimeofday(2), clock_gettime(2)
datefudge 1.17 June 23th, 2011 DATEFUDGE(1)