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1. UNIX for Dummies Questions & Answers
Hi,
How can i store the date + time from the output of the ls command in loop in a variable date1?
-rw-rw---- 1 user1 admin 500002 Jan 2 21:24 P002607.cssI then want to convert Jan 2 21:24 to this date format 2014-01-02 21:24:00 and save it in date2 variable.
Then i would like to add... (1 Reply)
Discussion started by: mohtashims
1 Replies
2. UNIX for Dummies Questions & Answers
while read l
do
vTimeCreated=`perl -e '@d=localtime ((stat(shift))); printf "%02d-%02d-%04d %02d:% 02d:%02d\n", $d,$d+1,$d+1900,$d,$d,$d' ${l}`
echo "${l} || ${vTimeCreated}" >> ${fPrefx}_Output_Files_${vDate}.txt
done < servername.txt
Using the above code to format date time for each of... (5 Replies)
Discussion started by: HeadBang
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3. Shell Programming and Scripting
while read l
do
vTimeCreated=`perl -e '@d=localtime ((stat(shift))); printf "%02d-%02d-%04d %02d:% 02d:%02d\n", $d,$d+1,$d+1900,$d,$d,$d' ${l}`
echo "${l} || ${vTimeCreated}" >> ${fPrefx}_Output_Files_${vDate}.txt
done < servername.txt Using the above code to format date time for each of the... (0 Replies)
Discussion started by: HeadBang
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4. Shell Programming and Scripting
Hi all
Y=`date +'%Y'`
M=`date +'%m'`
D=`date +'%d'`
if && ;then
yesterday=$Y$M`expr $D + 30`
echo $yesterday
else
if && ; then
yesterday=$Y$M`expr $D + 29`
echo $yesterday
else
if ; then
yesterday=$Y$M`expr $D + 27`
echo $yesterday
else
yesterday=$Y$M`expr $D - 1`
echo... (8 Replies)
Discussion started by: ultimatix
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5. Shell Programming and Scripting
Hi,
the date value retrieved by a parameter from the table is of the format dd/mm/yyyy. please let me know how to convert this to YYYYMMDD using sed
thanks (4 Replies)
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6. OS X (Apple)
Hi -
I'm using GeekTool to customize my desktop in OS X 10.5.8
I'm a complete novice as far as UNIX commands, just know enough to be dangerous.
I have a command entered as a Shell to display my events from iCal:
This makes my events show something like this:
While this is... (1 Reply)
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7. Shell Programming and Scripting
Hi
i need to have the date in the format like dd-mon-yyyy
my script goes like this
#!/usr/bin/bash
for f in /space/can /home/lbs/current/externalcdrbackup/L_CDR_Configuration/1/200903122* ; do
awk '{sum++;}END{for(i in sum) {print d,h,m,i, sum}}' "d=$(date +'%m-%d-%Y')" "h=$(date +'%H')"... (8 Replies)
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8. UNIX for Dummies Questions & Answers
Running bash how do I input the date in the command line like 3/20/90 and get an output formmated like March, 20 1990. (8 Replies)
Discussion started by: knc9233
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9. Shell Programming and Scripting
Date format MM/DD/YYYY
required is YYYYMMDD, I tried using sed but could not get it any help please. (4 Replies)
Discussion started by: mgirinath
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10. Shell Programming and Scripting
i need date in the following format December 14, 2005.
With date +"%b %d, %Y" command i am getting the following output :- Dec 14, 2005.
can anyone pls tell me how to get the full month name (2 Replies)
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TIME2POSIX(3) BSD Library Functions Manual TIME2POSIX(3)
NAME
time2posix, posix2time -- convert seconds since the Epoch
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <time.h>
time_t
time2posix(time_t t);
time_t
posix2time(time_t t);
DESCRIPTION
IEEE Std 1003.1-1988 (``POSIX.1'') legislates that a time_t value of 536457599 shall correspond to "Wed Dec 31 23:59:59 GMT 1986." This
effectively implies that POSIX time_t's cannot include leap seconds and, therefore, that the system time must be adjusted as each leap
occurs.
If the time package is configured with leap-second support enabled, however, no such adjustment is needed and time_t values continue to
increase over leap events (as a true `seconds since...' value). This means that these values will differ from those required by POSIX by the
net number of leap seconds inserted since the Epoch.
Typically this is not a problem as the type time_t is intended to be (mostly) opaque--time_t values should only be obtained-from and passed-
to functions such as time(3), localtime(3), mktime(3) and difftime(3). However, IEEE Std 1003.1-1988 (``POSIX.1'') gives an arithmetic
expression for directly computing a time_t value from a given date/time, and the same relationship is assumed by some (usually older) appli-
cations. Any programs creating/dissecting time_t's using such a relationship will typically not handle intervals over leap seconds cor-
rectly.
The time2posix() and posix2time() functions are provided to address this time_t mismatch by converting between local time_t values and their
POSIX equivalents. This is done by accounting for the number of time-base changes that would have taken place on a POSIX system as leap sec-
onds were inserted or deleted. These converted values can then be used in lieu of correcting the older applications, or when communicating
with POSIX-compliant systems.
The time2posix() function is single-valued. That is, every local time_t corresponds to a single POSIX time_t. The posix2time() function is
less well-behaved: for a positive leap second hit the result is not unique, and for a negative leap second hit the corresponding POSIX time_t
does not exist so an adjacent value is returned. Both of these are good indicators of the inferiority of the POSIX representation.
The following table summarizes the relationship between time_t and its conversion to, and back from, the POSIX representation over the leap
second inserted at the end of June, 1993.
DATE TIME T X=time2posix(T) posix2time(X)
93/06/30 23:59:59 A+0 B+0 A+0
93/06/30 23:59:60 A+1 B+1 A+1 or A+2
93/07/01 00:00:00 A+2 B+1 A+1 or A+2
93/07/01 00:00:01 A+3 B+2 A+3
A leap second deletion would look like...
DATE TIME T X=time2posix(T) posix2time(X)
??/06/30 23:59:58 A+0 B+0 A+0
??/07/01 00:00:00 A+1 B+2 A+1
??/07/01 00:00:01 A+2 B+3 A+2
[Note: posix2time(B+1) => A+0 or A+1]
If leap-second support is not enabled, local time_t's and POSIX time_t's are equivalent, and both time2posix() and posix2time() degenerate to
the identity function.
SEE ALSO
difftime(3), localtime(3), mktime(3), time(3)
BSD
September 11, 2005 BSD
