07-09-2001
sleep....
hi unix-folks!
there are 2 kinds of "sleeps":
1) the command "sleep"
with the command "sleep" you can "pause" a script for a
number of seconds.
syntax: sleep <interval in seconds>
2) "sleep" means "pause" or "stop". you can send a
process to sleep with:
a) kill -24 <processnumber>
or
b) <Strg> + <z> on commandline, when a script/programm
is running from commandline.
to restart this stoped process you can type
for a) kill -36 <processnumber>
or
for b) fg
hint: you can see all kill-sigs on your system by typing "kill -l".
the two you need are "STOP" (kill -24) and "CONT (kill -26).
i hope this helps!
best regards,
alex...
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PAUSE(3) BSD Library Functions Manual PAUSE(3)
NAME
pause -- stop until signal
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
pause(void);
DESCRIPTION
Pause is made obsolete by sigsuspend(2).
The pause() function forces a process to pause until a signal is received from either the kill(2) function or an interval timer. (See
setitimer(2).) Upon termination of a signal handler started during a pause(), the pause() call will return.
RETURN VALUES
Always returns -1.
ERRORS
The pause() function always returns:
[EINTR] The call was interrupted.
SEE ALSO
kill(2), poll(2), select(2), setitimer(2), sigsuspend(2)
STANDARDS
The pause() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').
HISTORY
A pause() syscall appeared in Version 6 AT&T UNIX.
BSD
June 4, 1993 BSD