Is there a way scroll text instead of page? Post: 12248

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Top Forums UNIX for Dummies Questions & Answers Is there a way scroll text instead of page? Post 12248 by Perderabo on Saturday 22nd of December 2001 03:35:41 PM

12-22-2001

Administrator Emeritus

Sleeping for less than a second is not a real good idea in a script. The overhead required to launch a process is too great. The right thing would be to switch to c. But it is easy to write a program like sleep that will sleep for less than a second if you want to give it a try. I wrote one that I call "nodoff". It sleeps for milliseconds. So "nodoff 500" is a half a second. Here it is...

Code:

#ifdef __STDC__
#define PROTOTYPICAL
#endif
#ifdef __cplusplus
#define PROTOTYPICAL
#endif

#include <stdlib.h>
#include <sys/time.h>

#ifdef PROTOTYPICAL
int main(int argc, char *argv[])
#else
main(argc,argv)
char *argv[];
#endif

{
        int millisecs, microsecs;
        struct timeval tv;

        millisecs=atoi(argv[1]);
        microsecs=millisecs*1000;

        tv.tv_sec=microsecs/1000000;
        tv.tv_usec=microsecs%1000000;

        select(0, NULL, NULL, NULL, &tv);
        exit(0);
}

Last edited by Perderabo; 01-16-2005 at 03:17 PM.. Reason: Remove html which is no longer supported

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LEARN ABOUT DEBIAN

drv_usectohz

drv_usectohz(9F)					   Kernel Functions for Drivers 					  drv_usectohz(9F)

NAME

       drv_usectohz - convert microseconds to clock ticks

SYNOPSIS

       #include <sys/types.h>
       #include <sys/ddi.h>

       clock_t drv_usectohz(clock_t microsecs);

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI).

PARAMETERS

       microsecs       The number of microseconds to convert.

DESCRIPTION

       drv_usectohz()  converts a length of time expressed in microseconds to  a number of system clock ticks.	The time arguments to  timeout(9F)
       and  delay(9F) are expressed in clock ticks.

       drv_usectohz() is a portable interface for drivers to make calls to timeout(9F) and delay(9F)  and  remain  binary  compatible  should  the
       driver object file be used on a system with a different clock speed (a different number of ticks in a second).

RETURN VALUES

       The  value  returned  is the  number of system clock ticks equivalent to the  microsecs argument. No error value is returned. If the  clock
       tick equivalent to  microsecs is too large to be represented as a  clock_t, then the maximum  clock_t value will be returned.

CONTEXT

       drv_usectohz() can be called from user or interrupt context.

SEE ALSO

       delay(9F), drv_hztousec(9F), timeout(9F)

       Writing Device Drivers

SunOS 5.10							    12 Nov 1992 						  drv_usectohz(9F)

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