05-31-2012
most versions of awk don't have very good date-handling functions, so it'd mean rolling your own and worrying about leap years and other such mess. perl is probably the best way.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a 5 gig file, no record terminators, field terminators are newline. The record length is 768 and I would like to check that every 768th byte is a newline and print out the byte position if it isn't. I would like to do this going either forward or backwards with one command if... (3 Replies)
Discussion started by: vtischuk@yahoo.
3 Replies
2. Shell Programming and Scripting
why
date -d "19010101" gets error " date: invalid date `19010101' "
but
date -d "19020101" is fine?
Any approach to fix that?
Thank you. (8 Replies)
Discussion started by: freizl
8 Replies
3. Shell Programming and Scripting
Hi,
I am passing date string of format 'YYYYMMDD' to a ksh script.
Will I be able to get next valid date from the passed in string.
Example I pass '20100228' to the shell script, Is there a reverse date command to get '20100301' .i.e to convert '20100228' to date and get next date.... (5 Replies)
Discussion started by: bittoo
5 Replies
4. Shell Programming and Scripting
File contian below data...
20111101
20111102
20111131
I am new to unix and per scirpt...
First two records are valid and last record is invalid,how to get the valid records...
Please help me unix or perl script.
:wall:
Thanks,
Murali (5 Replies)
Discussion started by: muralikri
5 Replies
5. Shell Programming and Scripting
Hi All,
I am trying to convert the date of all files under a directory in seconds,
PFB script
a=`ls -lrt | wc -l`
echo $a
for ((i=1;i<=$a;i++))
do
A=`ls -lrt | awk '{print $6,$7,$8}' | head -$i | tail -1`
echo ${A}
date -d '${A}' +%s
donebut I am getting error
date: invalid date... (1 Reply)
Discussion started by: Jcpratap
1 Replies
6. UNIX for Dummies Questions & Answers
Hi All,
I am a newbie...I would like to have a function which ll check if a file contains valid strings before "=" operator. Just to give you my requirement:
assume my file has content:
hello= gsdgsd sfdsg sgdsg sgdgdg
world= gggg hhhh iiiii
xxxx= pppp ppppp pppp
my... (5 Replies)
Discussion started by: rtagarra
5 Replies
7. Shell Programming and Scripting
My question is how would i loop a read command to keep asking the user for input and eventually print the no. of valid invalid inputs after a specified control input typed i.e. (-3). (1 Reply)
Discussion started by: Flowoftruth
1 Replies
8. UNIX for Advanced & Expert Users
Hi, I have a function to calculate "yesterday" in format YYYYMMDD:
desa_ev9 # date +"%Y%m%d" --date "-1 day 20180701"
20180630
desa_ev9 # date +"%Y%m%d" --date "-1 day 20180720"
20180719
desa_ev9 # date +"%Y%m%d" --date "-1 day 20190101"
20181231
desa_ev9 # date +"%Y%m%d" --date "-1... (2 Replies)
Discussion started by: augreen
2 Replies
9. 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
10. Shell Programming and Scripting
Hello.
I can use any particular (stupid or not) format when using bash date command.
Example :
~> date --date "now" '+%Y-%m-%d %H!%M!%S'
2019-06-03 12!55!33or
~> date --date "now" '+%Y£%m£%d %H¤%M¤%S'
2019£06£03 12¤57¤36
or
~> date --date "now" '+%Y-%m-%d %H-%M-%S'
2019-06-03 12-58-51
... (4 Replies)
Discussion started by: jcdole
4 Replies
TIME(2) Linux Programmer's Manual TIME(2)
NAME
time - get time in seconds
SYNOPSIS
#include <time.h>
time_t time(time_t *t);
DESCRIPTION
time() returns the time as the number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
If t is non-NULL, the return value is also stored in the memory pointed to by t.
RETURN VALUE
On success, the value of time in seconds since the Epoch is returned. On error, ((time_t) -1) is returned, and errno is set appropriately.
ERRORS
EFAULT t points outside your accessible address space.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001. POSIX does not specify any error conditions.
NOTES
POSIX.1 defines seconds since the Epoch as a value to be interpreted as the number of seconds between a specified time and the Epoch,
according to a formula for conversion from UTC equivalent to conversion on the naive basis that leap seconds are ignored and all years
divisible by 4 are leap years. This value is not the same as the actual number of seconds between the time and the Epoch, because of leap
seconds and because clocks are not required to be synchronized to a standard reference. The intention is that the interpretation of sec-
onds since the Epoch values be consistent; see POSIX.1 Annex B 2.2.2 for further rationale.
SEE ALSO
date(1), gettimeofday(2), ctime(3), ftime(3), time(7)
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/.
Linux 2010-02-25 TIME(2)