10 More Discussions You Might Find Interesting
1. Answers to Frequently Asked Questions
I m working on shell scripting and I m stuck where in my .txt file there is column as expiry date and I need to compare that date with system date and need to remove all the rows where expiry date is less than system date and create a new .txt with update. (1 Reply)
Discussion started by: Stuti
1 Replies
2. UNIX for Beginners Questions & Answers
Can someone help me with the code wherein there is a file f1.txt with different column and 34 column have expiry date and I need to get that and compare with system date and if expiry date is <system date remove those rows and other rows should be moved to new file f2.txt .
I don't want to delete... (2 Replies)
Discussion started by: Stuti
2 Replies
3. Shell Programming and Scripting
i try to set linux date & time in specific format but it keep giving me error
Example :
date "+%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01"
or
date +"%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01"
keep giving me this error :
date: invalid date ‘19-01-2017 00:05:01'
Please use CODE tags... (7 Replies)
Discussion started by: umen
7 Replies
4. Shell Programming and Scripting
I am having problems because some of my files have timestamps that are earlier that 1.1.1970, the Unix start of time convention.
So I would like to write a script that finds all files in home folder and subfolders with timestamps earlier than 1.1.1970 and converts them to 1.1.1980.
I... (3 Replies)
Discussion started by: francus
3 Replies
5. AIX
Dears,
My boss asked me to record the login information on AIX server, so I used "last" command to get i want. But it is so strange when i get a record the login date is Jan,01 1970 (as attached picture). does anyone know what happen?
Thanks and Regards, (6 Replies)
Discussion started by: Zack.Chiang
6 Replies
6. Shell Programming and Scripting
Dear all,
I have 2 questions.
I have a file with many rows which has date of the format YYYYMMDD.
1. I need to change the date to that weeks friday date(Ex: 20120716(monday) to 20120720). Satuday/Sunday has to be changed to next week friday date too.
2. After converting the date to... (10 Replies)
Discussion started by: 2001.arun
10 Replies
7. Shell Programming and Scripting
Hi,
In a field, I should receive the date with time stamp in a particular field. But sometimes the vendor sends just the date or the timestamp or correctl the date×tamp. I have to figure out the the data is a date or time stamp or date×tamp.
If it is date then append "<space>00:00:00"... (1 Reply)
Discussion started by: machomaddy
1 Replies
8. UNIX for Dummies Questions & Answers
Hello gurus,
I am hoping someone can help me with the required code/script to make this work. I have the following file with records starting at line 4:
NETW~US60~000000000013220694~002~~IT~USD~2.24~20110201~99991231~01~01~20101104~... (4 Replies)
Discussion started by: chumsky
4 Replies
9. Shell Programming and Scripting
Hi all,
I've used various scripts in the past to work out the date last week from the current date, however I now have a need to work out the date 1 week from a given date.
So for example, if I have a date of the 23rd July 2010, I would like a script that can work out that one week back was... (4 Replies)
Discussion started by: Donkey25
4 Replies
10. UNIX for Dummies Questions & Answers
How can I get the syatem to give me the days since 1970 (as seen in the shadow file)? (4 Replies)
Discussion started by: 98_1LE
4 Replies
DIFFTIME(3) Linux Programmer's Manual DIFFTIME(3)
NAME
difftime - calculate time difference
SYNOPSIS
#include <time.h>
double difftime(time_t time1, time_t time0);
DESCRIPTION
The difftime() function returns the number of seconds elapsed between time time1 and time time0, represented as a double. Each of the
times is specified in calendar time, which means its value is a measurement (in seconds) relative to the Epoch, 1970-01-01 00:00:00 +0000
(UTC).
CONFORMING TO
SVr4, 4.3BSD, C89, C99.
NOTES
On a POSIX system, time_t is an arithmetic type, and one could just define
#define difftime(t1,t0) (double)(t1 - t0)
when the possible overflow in the subtraction is not a concern. On other systems, the data type time_t might use some other encoding where
subtraction doesn't work directly.
SEE ALSO
date(1), gettimeofday(2), time(2), ctime(3), gmtime(3), localtime(3)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU
2010-02-25 DIFFTIME(3)