Hi,
Just recently we seem to be getting the following error message relating to SSH when we run the UNIX script in background mode:
warning: You have no controlling tty. Cannot read confirmation.^M
warning: Authentication failed.^M
Disconnected; key exchange or algorithm negotiation... (1 Reply)
Hi, folks.
Sorry for bothering, but maybe someone could help me please.
The problem is the following:
there is some script that copies files from local file system to AFS. The copying is performed with dd command.
The script copies data into some AFS volumes.
The problem appeared with one... (0 Replies)
Hi
I am right now facing a strange hardware problem. System get booted with the following error:
Fatal Error Reset
CPU 0000.0000.0000.0003 AFSR 0100.0000.0000.0000 SCE
AFAR 0000.07c6.0000.1000
SC Alert: Host System has Reset
It happen 4 or 5 times and get the same error every time.I... (8 Replies)
i have written the code in which i want to calculate timedifference of request sent time and response receive time from device in second and microsecond. but when i executes the binary i get the response receive time earlier than request sent time which in turn returns the negative time difference.... (3 Replies)
1) when user login to the server the session got colosed. How will resolve?
2) While firing the command ls -l we are not able to see the any files in the director. but over all view the file system using the command df -g it is showing 91% used. what will be the problem?
Thanks in advance. (1 Reply)
Hello ...
Can somebody help telling me how smallest clock resolution on ones sytem can be in obtained in C using gettimeofday() .
Thankz in advance... (4 Replies)
At work I am trying to get this one Linux machine (let's call it ctesgm07) to behave like another Linux machine that we have (let's call it test007).
test007 returns the following version info:
cat /etc/debian_version: lenny/sid
uname -a: Linux test007 2.6.27-7-generic #1 SMP Tue Nov 4... (0 Replies)
Hi,
This is rather a question from a "user" than from a sys admin, but I think this forum is apropriate for the question.
I have an adress with automatic email forwarding and for some senders (two hietherto), emails are bouncing. This has really created a lot of problems those two time so I... (0 Replies)
I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore.
Here is what 's happening:
* I wanted to remove lines containing digits so I used this... (25 Replies)
Hi everyone,
I am experiencing discontinuity of Internet service, this started 1 month ago. Everything worked very well for 1 year of intensive use, but now, I have problems reaching my gateway.
The gateway is not my router but a node belonging to my ISP and I share the same public IP with... (3 Replies)
Discussion started by: remic
3 Replies
LEARN ABOUT REDHAT
gettimeofday
GETTIMEOFDAY(2) Linux Programmer's Manual GETTIMEOFDAY(2)NAME
gettimeofday, settimeofday - get / set time
SYNOPSIS
#include <sys/time.h>
int gettimeofday(struct timeval *tv, struct timezone *tz);
int settimeofday(const struct timeval *tv , const struct timezone *tz);
DESCRIPTION
The functions gettimeofday and settimeofday can get and set the time as well as a timezone. The tv argument is a timeval struct, as speci-
fied in /usr/include/sys/time.h:
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* microseconds */
};
and gives the number of seconds and microseconds since the Epoch (see time(2)). The tz argument is a timezone :
struct timezone {
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
The use of the timezone struct is obsolete; the tz_dsttime field has never been used under Linux - it has not been and will not be sup-
ported by libc or glibc. Each and every occurrence of this field in the kernel source (other than the declaration) is a bug. Thus, the
following is purely of historic interest.
The field tz_dsttime contains a symbolic constant (values are given below) that indicates in which part of the year Daylight Saving Time is
in force. (Note: its value is constant throughout the year - it does not indicate that DST is in force, it just selects an algorithm.) The
daylight saving time algorithms defined are as follows :
DST_NONE /* not on dst */
DST_USA /* USA style dst */
DST_AUST /* Australian style dst */
DST_WET /* Western European dst */
DST_MET /* Middle European dst */
DST_EET /* Eastern European dst */
DST_CAN /* Canada */
DST_GB /* Great Britain and Eire */
DST_RUM /* Rumania */
DST_TUR /* Turkey */
DST_AUSTALT /* Australian style with shift in 1986 */
Of course it turned out that the period in which Daylight Saving Time is in force cannot be given by a simple algorithm, one per country;
indeed, this period is determined by unpredictable political decisions. So this method of representing time zones has been abandoned. Under
Linux, in a call to settimeofday the tz_dsttime field should be zero.
Under Linux there is some peculiar `warp clock' semantics associated to the settimeofday system call if on the very first call (after boot-
ing) that has a non-NULL tz argument, the tv argument is NULL and the tz_minuteswest field is nonzero. In such a case it is assumed that
the CMOS clock is on local time, and that it has to be incremented by this amount to get UTC system time. No doubt it is a bad idea to use
this feature.
The following macros are defined to operate on a struct timeval :
#define timerisset(tvp)
((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp)
((tvp)->tv_sec cmp (uvp)->tv_sec ||
(tvp)->tv_sec == (uvp)->tv_sec &&
(tvp)->tv_usec cmp (uvp)->tv_usec)
#define timerclear(tvp)
((tvp)->tv_sec = (tvp)->tv_usec = 0)
If either tv or tz is null, the corresponding structure is not set or returned.
Only the super user may use settimeofday.
RETURN VALUE
gettimeofday and settimeofday return 0 for success, or -1 for failure (in which case errno is set appropriately).
ERRORS
EPERM settimeofday is called by someone other than the superuser.
EINVAL Timezone (or something else) is invalid.
EFAULT One of tv or tz pointed outside your accessible address space.
NOTE
The prototype for settimeofday and the defines for timercmp, timerisset, timerclear, timeradd, timersub are (since glibc2.2.2) only avail-
able if _BSD_SOURCE is defined (either explicitly, or implicitly, by not defining _POSIX_SOURCE or compiling with the -ansi flag).
CONFORMING TO
SVr4, BSD 4.3
SEE ALSO date(1), adjtimex(2), time(2), ctime(3), ftime(3)Linux 2.0.32 1997-12-10 GETTIMEOFDAY(2)