11-14-2009
piping stdout and stderr to whatever you apply after it.
10 More Discussions You Might Find Interesting
1. Solaris
Does any one knows a work around for the crontab bug when connecting using ssh to a Solaris 8 system?
When you submit a crontab job through a ssh session, the job will not be executed, SunSolve has reported no fixing patches? (3 Replies)
Discussion started by: Negm
3 Replies
2. Shell Programming and Scripting
Can any body kindly tell me what is the purpose of 2>&1 in the following commands.
nohup ./append_import.sh 1 > import1.out 2>&1 < /dev/null &
nohup ./append_import.sh 2 > import2.out 2>&1 < /dev/null & (1 Reply)
Discussion started by: mmunir
1 Replies
3. UNIX for Dummies Questions & Answers
Hi there,
I'm using crontab to move some files every minute, but when crontab doesn't find these files it sends a message to the file "user_name" in the directory "var/spool/mail". Is it possible to "bypass" this problem?
Thanks in advance,
Giordano Bruno (1 Reply)
Discussion started by: Giordano Bruno
1 Replies
4. Fedora
Hi there,
I'm working with two servers, one with FEDORA 6 and the other one with FEDORA 7, and if I put these lines in crontab:
MAILTO=MYADDRESS@mail.com
*/1 * * * * df -h
everything works fine on FEDORA 7 , while it doesn't work on6?!?...and I find this message in the log file:
MAIL... (2 Replies)
Discussion started by: Giordano Bruno
2 Replies
5. Solaris
I have two ethernet interfaces nge0 and nge1.
An IP assigned on nge0 is 10.10.10.1/24 and on nge1 is 20.20.20.1/24. I want to make nge0 as primary interface.
My question here is,
1. Being nge0 as primary interface, if I ping to an IP 20.20.20.5, what will happen?
2. If the answer for the... (4 Replies)
Discussion started by: nthiruvenkatam
4 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have read from the book that , <> causes the file to be used as both input as well as output. Can anyone give me the scenario where <> will be useful?
Thanks (10 Replies)
Discussion started by: pandeesh
10 Replies
7. Solaris
Hi Experts,
I would like to know, what does "2>&1" do in crontab?
example:
* * * * * /export/user/home/test.sh >> /export/user/home/logtest.log 2>&1
My colleague told me the commabd 2>&1 mean to prevent crontab sending an email (sendmail on /var/mail/root) when the script failed. So, if... (5 Replies)
Discussion started by: edydsuranta
5 Replies
8. Solaris
Hello Guru's
I'm trying to take the output of solaris top command and output to a txt file every few minutes. The issue that I'm experiencing is that I can run the following:
#!/bin/bash
#
logfile="/usr/mvf/morris/top.log"
# echo... (2 Replies)
Discussion started by: littlemorris
2 Replies
9. UNIX for Dummies Questions & Answers
HI,
I am using centos 6 and finding difficultly in doing 2 below things.
1. i have a user praveen i want to allow him to create cron job of his own. so i have added his user id in cron.allow but still it is not allowing him to edit(even if i have created praveen from root user) or create his... (4 Replies)
Discussion started by: praveenkumar198
4 Replies
10. Shell Programming and Scripting
I have a script that emails me when I run it manually, but the crontab I'm using must be 'silencing' the output? Here's what I have:
*/15 * * * * /usr/src/blah.sh > /dev/null 2>&1
I don't want it to email me every time it runs, just when I run the sendmail command inside the script if the... (13 Replies)
Discussion started by: unclecameron
13 Replies
LEARN ABOUT DEBIAN
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