Sponsored Content
Full Discussion: time access in C
Top Forums Programming time access in C Post 302439249 by xyzt on Thursday 22nd of July 2010 07:01:39 AM
Old 07-22-2010
time access in C

I've a problem with time functions in C. I get current time and convert it to local time and gmt time. But their value seems to be same.I think I'm missing something..

Code:
#include <stdio.h>
#include <memory.h>
#include <time.h>

int main()
{
        time_t now_local, now_gmt;
        now_local = time(NULL);
        const char* local_now_str = ctime(&now_local);
        printf("local time: %s\n", local_now_str);

        now_gmt = time(NULL);
        const char* gmt_now_str = asctime( gmtime( &now_gmt ) );
        printf("gmt time  : %s\n", gmt_now_str);

        printf("diff      : %d\n", (int)(now_local-now_gmt));
}

Output:

local time: Thu Jul 22 13:53:05 2010

gmt time : Thu Jul 22 10:53:05 2010

diff : 0

Last edited by xyzt; 07-22-2010 at 08:09 AM..
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Access time of a file

I thought that access time of a file is time when the file was run last time (or I read somewhere that it's time when system lookup the file -> but I'm not sure when it really is) How is it exactly? Thank you for help! (11 Replies)
Discussion started by: MartyIX
11 Replies

2. AIX

Semi-operators using Root access all the time ?

I am just curious about your opinion on something which I am against. I work at the client location. Our office is very small (4 employees + 1 teamlead where 1 employee per 12hrs shifts) and we are responsible to process the reception of external files into the client's database via some tools.... (3 Replies)
Discussion started by: Browser_ice
3 Replies

3. UNIX for Advanced & Expert Users

Linux: Access time of mapped data

Before I forget, I'm running on a RedHat 5 box with the following uname -a output: Linux gnc141c 2.6.18-53.el5 #1 SMP Wed Oct 10 16:34:19 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux Now on to my question. I'm using a tool that maps a Matlab .mat file using the Linux mmap functionality and then... (1 Reply)
Discussion started by: rusttree
1 Replies

4. Shell Programming and Scripting

Multiple access to a script at same time- problem

Dear frnds, I have developed a shell script. Like , the script will produce a output file with 4-5 lines using the parameters passed to it. Around 25 jobs would be calling the script at the same time. For few jobs alone, the output file is not created properly. The... (4 Replies)
Discussion started by: Gopal_Engg
4 Replies

5. Shell Programming and Scripting

need the last access time for a .gz file

i have file named aaaa. The file aaaa was zipped on one particular time. Need to know the command to find out when the file "aaaa" was actually zipped. (1 Reply)
Discussion started by: expert
1 Replies

6. UNIX for Dummies Questions & Answers

File access time does not change on some files

Hey All, I want to get the access time of files in a directory. I used ls -lu on a directory and picked a file that had the access time of Mar 1 and used cat to get the contents of the file. Then I used the ls -lu again and the access time changed on that file. Perfect !! Now if I cat a... (10 Replies)
Discussion started by: vipulgupta0
10 Replies

7. Red Hat

File access time issue

Hi, I am facing a weird file access time issue on redHat5.x. I have a program which will scan the files in the NFS system and delete files which are older than 4 days, before deleting files program will print the access time of the file. Some of the files are getting deleted which are not older... (1 Reply)
Discussion started by: Satyak
1 Replies

8. Red Hat

Access time of files and directories

My query please: What I saw how access times of a file and directories work. 1) For a file the access time is the time when I 1st access it after last modification of the file, i.e., if the file is modified at 10 AM and then I access it at 11 AM. After than whenever I access without... (7 Replies)
Discussion started by: ravisingh
7 Replies

9. Programming

Memory and cache access time discrepancy

#include<stdio.h> #include<stdlib.h> #include<sys/time.h> #include<time.h> #include "rdtsc.h" #define SIZE 4*64*1024 int main() { unsigned long long a,b; int arr={0}; int i; register int r; a=rdtsc(); r=arr; b=rdtsc(); printf("1st element Access Cycles = %llu\n",b-a); (2 Replies)
Discussion started by: Vaibhavs1985
2 Replies
install::TempContent::Objects::mod_perl-2.0.9::docs::apiUseraContributedinstall::TempContent::Objects::mod_perl-2.0.9::docs::api::Apache2::Util(3)

NAME
Apache2::Util - Perl API for Misc Apache Utility functions Synopsis use Apache2::Util (); # OS escape path $escaped_path = Apache2::Util::escape_path($path, "a 'long' file.html"); # format time as a string my $fmt = "%a, %D %H:%M:%S %Z"; $fmtdate = Apache2::Util::ht_time($r->pool, $r->request_time, $fmt, 0); Description Various Apache utilities that don't fit into any other group. Functions API "Apache2::Util" provides the following functions and/or methods: "escape_path" convert an OS path to a URL in an OS dependant way. $escaped_path = Apache2::Util::escape_path($path, $p); $escaped_path = Apache2::Util::escape_path($path, $p, $partial); arg1: $path ( string ) The path to convert arg2: $p ( "APR::Pool" ) The pool to allocate from opt arg3: $partial ( boolean ) if TRUE, assume that the path will be appended to something with a '/' in it (and thus does not prefix "./") if FALSE it prepends "./" unless $path contains ":" optionally followed by "/". the default is TRUE ret: $escaped_path ( string ) The escaped path since: 2.0.00 "ht_time" Convert time from an integer value into a string in a specified format $time_str = Apache2::Util::ht_time($p); $time_str = Apache2::Util::ht_time($p, $time); $time_str = Apache2::Util::ht_time($p, $time, $fmt); $time_str = Apache2::Util::ht_time($p, $time, $fmt, $gmt); arg1: $p ( "APR::Pool object" ) The pool to allocate memory from opt arg2: $time ( number ) The time to convert (e.g., "time()" or "$r->request_time"). If the value is not passed the current time will be used. opt arg3: $fmt ( string ) The format to use for the conversion, using strftime(3) tokens. If the value is not passed the default format used is: "%a, %d %b %Y %H:%M:%S %Z" opt arg4: $gmt ( boolean ) The time will be not converted to GMT if FALSE is passed. If the value is not passed TRUE (do convert) is used as a default. ret: $time_str (string) The string that represents the specified time since: 2.0.00 Examples: Use current time, the default format and convert to GMT: $fmtdate = Apache2::Util::ht_time($r->pool); Use my time, the default format and convert to GMT: my $time = time+100; $fmtdate = Apache2::Util::ht_time($r->pool, $time); Use the time the request has started, custom format and don't convert to GMT: my $fmt = "%a, %D %H:%M:%S %Z"; $fmtdate = Apache2::Util::ht_time($r->pool, $r->request_time, $fmt, 0); See Also mod_perl 2.0 documentation. Copyright mod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0. Authors The mod_perl development team and numerous contributors. perl v5.18.2 2015install::TempContent::Objects::mod_perl-2.0.9::docs::api::Apache2::Util(3)
All times are GMT -4. The time now is 02:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy