03-29-2012
for doing that you need to place public key authentication between two machines.
1. Generate private/public key pair
2. Copy the public keys into .ssh of server from which you want to copy files.
check this post for details:
https://www.unix.com/unix-advanced-ex...-password.html
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LEARN ABOUT OSF1
sigreturn
sigreturn(2) System Calls Manual sigreturn(2)
NAME
sigreturn - Returns from signal
SYNOPSIS
#include <signal.h>
int sigreturn( struct sigcontext *scp) ;
PARAMETERS
Points to a sigcontext structure whose members contain the processor state to be restored. The contents of the sigcontext structure should
have been previously obtained by entry to a signal handler or by the setjmp() or sigsetjmp() function.
DESCRIPTION
The sigreturn() function restores the processor state of the calling process from a sigcontext structure. The sigcontext structure contains
the state of all application-visible registers as well as the signal mask. The specific members of the sigcontext structure depend on the
machine architecture. Each machine-dependent structure member is defined in the signal.h include file.
The sigreturn() function is used internally by the system software to restore the processor state on return from a signal handler and from
a longjmp() function, to restore the state saved by a previous setjmp() or sigsetjmp() function.
NOTES
An application should only use sigreturn() with great caution.
RETURN VALUES
Upon successful completion, the sigreturn() function does not return. Otherwise, a value of -1 is returned and errno may be set to indi-
cate the error.
ERRORS
If the sigreturn() function fails, the process context remains unchanged and errno is set to one of the following values: The scp parameter
points to memory space that is not a valid part of the process address space. The sigcontext structure contains unsupported or illegal
values.
RELATED INFORMATION
Functions: setjmp(3), sigaction(2), sigvec(2) delim off
sigreturn(2)