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.
SEE ALSO
date(1), gettimeofday(2), time(2), ctime(3), gmtime(3), localtime(3)
COLOPHON
This page is part of release 3.53 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
2012-12-22 DIFFTIME(3)