Meaning of:
redirect both stderr and stdout to '/dev/null' (/dev/null is the place to dump anything you don't want, basically this special file discards all data written to it)
You will find a lot of earlier posts on '> /dev/null 2>&1' in this forum. Please search the text 'dev null' on the search box available on top right corner of this page (google custom search to search unix.com)
Hi,
I'm a newbie in shell script.
I have a problem in running my a.out in a bash shell script named vetri . The following is the code.
#!bash/bin
./a.out abc.xyz
where ./a.out is a c++ bin file and abc.xyz is an argument. My ./a.out expects an input (cin >> temp). How can I give the... (5 Replies)
Hi,
I need to run an application (Hudson) listening to port 8080 on a remote Solaris server. I have managed to start that application and tried to access it with my browser from my local PC, but unsuccessfully.
I need to find out what is blocking the access to that port (or any other). A... (9 Replies)
Hi,
I am trying to find files with specific name using find / -name core -print..
this command is hanging and never completes as it is searching for all the automount filesystems ..i cant eliminate using "! -fstype nfs" as this is not a nfs filesystem
pls let me know if anyone know how to... (2 Replies)
Hi,
I have one query that is suppose if I have a script that pick up some files from source folder and put it into destination folder , and I want this script to run after every 1 hour, to make it configurable as per that I have options like crontab and nohup but when I test this script I have to... (2 Replies)
Hello,
I need to increase the maximum number of open files for the Gnome configuration daemon, /usr/lib/gconfd-2. There is one of these for each username, no matter how many sessions they've got.
We have lots of people using DTUs to log into a Sun Ray server using the same account (bad idea,... (3 Replies)
Hi,
When process listing, I came across a process running as user daemon.
daemon 23576 23574 0 07:32:04 ? 0:07 oracle (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
root 27526 27444 1 07:38:43 ttyp5 0:00 grep 23574
why a process runs as user daemon, when it should be... (3 Replies)
Hi
I am currently testing SCOM2012 on my AIX systems for monitoring. I tested it on 3 systems and immediately i got the following errors:
Alert: Network Status Monitor daemon (rpcstat) is not running
Source: AIX 7.1
Path: (left blank)
Last modified by: (left blank)
Last modified time:... (3 Replies)
My requirement is to run two scripts simultaneously.
Let say, script1.ksh is running in a loop :
example:
script1.ksh is:
for i in 1 2 3
do
script2.ksh 1 &
#psedu code which is required to write here
# if script 2.ksh is running, execute a script3.ksh (which actually check the... (2 Replies)
Discussion started by: sumitc
2 Replies
LEARN ABOUT FREEBSD
fd
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