could someone please tell me how to stop error messages being displayed to the console port.
Currently, error messages are streaming to the console and I ant do anything.
many thanks..... (2 Replies)
I am writing a program that uses system() to pass commands to the command interpreter. Is there a way to read the output that the commands produce? (1 Reply)
I am running Shorewall firewall config program to utilize iptables on a Debian 3.3.5 system. This system is setup for a getway/router. I am getting a message:
Shorewall:bogons:Drop:IN=eth0 OUT= MAC+ mac address of eth0 SRC:someinternetIP DST=MYIPADD LEN=61 TOS+0x00 PREC=0x00 TTL=114 ID=6673... (3 Replies)
kill -s KILL 0
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i have used this command in a script...it is showing "killed" in output console.
i don't want that.plz help what to do.i have tried --kill -s KILL 0 >/dev/null
it is still showing "killed" in the output console...what to do? (1 Reply)
I want to change the appearance of a message I got in UNIX console.
Eg: In console: "no server running"
I need it as "****no server running*****".
Thanks in advance. (3 Replies)
Hi folks,
Please advise which command/command line shall I run;
1) to display the command and its output on console
2) simultaneous to save the command and its output on a file
I tried tee command as follows;
$ ps aux | grep mysql | tee /path/to/output.txt
It displayed the... (7 Replies)
Hey everyone
I have a sparc enterprise T2000 I'm trying to install solaris 10 on. The only way I can connect to it is the SER MGT console, but I'm not getting anything to display (in Hyper terminal, or PUTTY) when I boot it. Upon googleing, all I get back is "No output may have been generated.... (4 Replies)
Hellos!
I want to have a unix script that will run grep on the console output. Here is what my script does:
1. Telnet into a remote server (I have done this part successfully)
2. On successful login, the remote server displays outputs information on the console. I need to run grep on that... (6 Replies)
I am writing a shell script with 2 run time arguments. During the execution if i got any error, then it needs to redirected to a error file and in console. Also both error and output to be redirected to a log file. But i am facing the below error.
#! /bin/sh
errExit ()
{
errMsg=`cat... (1 Reply)
Discussion started by: sarathy_a35
1 Replies
LEARN ABOUT OPENDARWIN
pipe
PIPE(2) BSD System Calls Manual PIPE(2)NAME
pipe -- create descriptor pair for interprocess communication
SYNOPSIS
#include <unistd.h>
int
pipe(int *fildes);
DESCRIPTION
The pipe() function creates a pipe, which is an object allowing unidirectional data flow, and allocates a pair of file descriptors. The
first descriptor connects to the read end of the pipe, and the second connects to the write end, so that data written to fildes[1] appears on
(i.e., can be read from) fildes[0]. This allows the output of one program to be sent to another program: the source's standard output is set
up to be the write end of the pipe, and the sink's standard input is set up to be the read end of the pipe. The pipe itself persists until
all its associated descriptors are closed.
A pipe whose read or write end has been closed is considered widowed. Writing on such a pipe causes the writing process to receive a SIGPIPE
signal. Widowing a pipe is the only way to deliver end-of-file to a reader: after the reader consumes any buffered data, reading a widowed
pipe returns a zero count.
RETURN VALUES
On successful creation of the pipe, zero is returned. Otherwise, a value of -1 is returned and the variable errno set to indicate the error.
ERRORS
The pipe() call will fail if:
[EMFILE] Too many descriptors are active.
[ENFILE] The system file table is full.
[EFAULT] The fildes buffer is in an invalid area of the process's address space.
SEE ALSO sh(1), read(2), write(2), fork(2), socketpair(2)HISTORY
A pipe() function call appeared in Version 6 AT&T UNIX.
4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution