Not unless you specifically set stdin to unbuffered...
How about:
Granted, launching a whole new process isn't the most efficient way to do this, but you never cared about that before, so if you're looking for a quick and simple solution this will work. It will wait for one and only one keyboard hit, unlike jim's similar solution, which waits for the enter key.
I guess I posted in wrong forum before. How do I pause another process and then restart it on linux? The other process doesn't listen for anything.
Thanks for any help you can offer.
Dane :confused: (1 Reply)
ok...
Take a look at the snippets below.
What does it mean a construct like:
void function()
type var;
{
funct code...
}
hmmm.. i dont get it. my compiler either.
void log_message(filename,message)
char *filename;
char *message;
{
FILE *logfile;
logfile=fopen(filename,"a");... (5 Replies)
All of my machines (various open source derivatives on x86 and amd64) store argv above the stack (at a higher memory address). I am curious to learn if any systems store argv below the stack (at a lower memory address).
I am particularly interested in proprietary Unices, such as Solaris, HP-UX,... (9 Replies)
6) printf "\n GoodBye! \n\n"; exit ;;
I am trying modify the above command to pause a couple of seconds before exiting, so a message can be displayed. Thank you :). (8 Replies)
Discussion started by: cmccabe
8 Replies
LEARN ABOUT FREEBSD
stderr
FD(4) BSD Kernel Interfaces Manual FD(4)NAME
fd, stdin, stdout, stderr -- file descriptor files
DESCRIPTION
The files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed through the file system. If the file descriptor is
open and the mode the file is being opened with is a subset of the mode of the existing descriptor, the call:
fd = open("/dev/fd/0", mode);
and the call:
fd = fcntl(0, F_DUPFD, 0);
are equivalent.
Opening the files /dev/stdin, /dev/stdout and /dev/stderr is equivalent to the following calls:
fd = fcntl(STDIN_FILENO, F_DUPFD, 0);
fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
fd = fcntl(STDERR_FILENO, F_DUPFD, 0);
Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.
IMPLEMENTATION NOTES
By default, /dev/fd is provided by devfs(5), which provides nodes for the first three file descriptors. Some sites may require nodes for
additional file descriptors; these can be made available by mounting fdescfs(5) on /dev/fd.
FILES
/dev/fd/#
/dev/stdin
/dev/stdout
/dev/stderr
SEE ALSO tty(4), devfs(5), fdescfs(5)BSD June 9, 1993 BSD