Some messages are displayed because they are printed in stderr.
The > redirects only the stdout. So the solution to put a program in absolute silent mode is
&> /dev/null
I have been using the following code for sending out an email from a AIX UNIX platform.
cat filename | telnet mailhost 25 >/dev/null
Time to time I get a message
loopback: A specified file does not support the ioctl system call.
Can anyone tell me what this means? I need this function... (1 Reply)
Hi,
I am connecting via SFTP to a remote Server. My problem is on trying to LOGin, I am asked for a password. I need to make this process automatic such that I can login without being prompted for a password.
I can achieve this if the remote server has a simple FTP server and not SFTP. How... (6 Replies)
Hi,
I have a AIX shell script that normally runs in an interactive mode. Now there is a need to it in silent mode and take all default answers.
How do I do that?
Thanks. (3 Replies)
I would like to use the WWW::Mechanize module to access a webpage that is password-protected. I was wondering if there was a way to make the input silent when asked from the script. For example:
What is your password: <password>
Where <password> is where you put your password, but is silent... (2 Replies)
Hi,
I am trying to do a silent installation of a JDk on a linux machine. Can anyone give me a command that would do it for me.
Thanx
Sundeep (2 Replies)
I run a background process using '&'. (see example below)
How can I suppress the '&' messages that are written to my console?? (lines 2 and 5)
Current Output...
1 > ak@LATU ~> ls &
2 > 4000
3 > ak@LATU ~>
4 > apps/ dl/ gems/ todo/ tst/ util/
5 > + Done ... (1 Reply)
Hi All,
I have a script which calls some other scripts.. When i run the parent script all the status messages are displaying on terminal.
I want to know how to suppress dem...
or run a script in silent mode
Thanks,
Firestar (4 Replies)
Hello Experts,
I am learning perl. I know ksh/bash/csh...
In ksh I use to do this way... to read user input in silent mode so that nothing returns on the screen.
stty -echo
read -r pswd
stty echo
Please let me know the way in perl how to do it.
Here are my OS and Perl Details...
... (3 Replies)
:confused:
when i tried to look the status of DNS-client, it is in maintenance mode.....
Please tell me how to bring it back to online mode...PLEASE TELL ME STEP BY STEP.... PLEASE...
:wall: (2 Replies)
is there a way for my C++ application to find out which mode the hpux OS is running in?
standard mode or trusted mode. (3 Replies)
Discussion started by: einsteinBrain
3 Replies
LEARN ABOUT FREEBSD
stdout
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