Hi all hope you can help as I am going MAD!!! :eek:
The below is in a shell script but the redirection in the sed line does not work and outputs to the screen and the $fname_2 does note get created ?????
Can any one help ??
#!/bin/ksh
cd /app/
for fname in `ls -1 X*`
do
sed 1d $fname... (3 Replies)
Hi all,
I have the following script:
-------------------------------------------------
#SCRIPT TO CHECK WHO HAS ACCESSED THE LOG/FILE IN PAST 'N' MINUTES, AND MAIL ACCORDINGLY.
MYPATH="/clocal/mqbrkrs/user/mqsiadm/sanjay/"
MAIL_RECIPIENTS="vg517@dcx.com"
Subject="File accessed in last... (6 Replies)
Hi friends
I am facing one problem while redirecting the out of the stderr and stdout to a file
let example my problem with a simple example
I have a file (say test.sh)in which i run 2 command in the background
ps -ef &
ls &
and now i am run this file and redirect the output to a file... (8 Replies)
Hi
I am not if this is possible: is it possible in bach (or another shell) to redirect GLOBALLY the stdout/stderr channels to a file.
So, if I have a script
script.sh
cmd1
cmd2
cmd3
I want all stdout/stderr goes to a file. I know I can do:
./script.sh 1>file 2>&1
OR
... (2 Replies)
Hi,
I would like to avoid re-directing line by line to a file.
What is the best way to re-direct STDOUT to a file in a subshell?
Thanks in advance.
Cheers
Vj (1 Reply)
Hello
I read a lot of post related to this topic, but nothing helped me. :mad:
I'm running a ksh script with subshell what processing some ldap command. I need to check output for possible errors.
#!/bin/ksh
...
readinput < $QCHAT_INPUT |&
while read -p line
do
echo $line
... (3 Replies)
Hi All,
I am using centOS.
When I try to redirect STDOUT to a file, it ends up in getting some funny characters. For example ...
STDOUT of the command as follows.
$ ls
H3k27me3
H3k36me3
H3k4me1
H3k4me2
H3k4me3
H3k9ac
H4k20me1
$ ls >test
$ cat test
^ (1 Reply)
Dear all,
redirecting STDOUT & STDERR to file is quite simple, I'm currently using:
exec 1>>/tmp/tmp.log; exec 2>>/tmp/tmp.logBut during script execution I would like the output come back again to screen, how to do that?
Thanks
Lucas (4 Replies)
Dear all,
redirecting STDOUT & STDERR to file is quite simple, I'm currently using:
Code:
exec 1>>/tmp/tmp.log; exec 2>>/tmp/tmp.log
But during script execution I would like the output come back again to screen, how to do that?
Thanks
Luc
edit by bakunin: please use CODE-tags like the... (6 Replies)
Discussion started by: tmonk1
6 Replies
LEARN ABOUT REDHAT
dup
DUP(2) Linux Programmer's Manual DUP(2)NAME
dup, dup2 - duplicate a file descriptor
SYNOPSIS
#include <unistd.h>
int dup(int oldfd);
int dup2(int oldfd, int newfd);
DESCRIPTION
dup and dup2 create a copy of the file descriptor oldfd.
After successful return of dup or dup2, the old and new descriptors may be used interchangeably. They share locks, file position pointers
and flags; for example, if the file position is modified by using lseek on one of the descriptors, the position is also changed for the
other.
The two descriptors do not share the close-on-exec flag, however.
dup uses the lowest-numbered unused descriptor for the new descriptor.
dup2 makes newfd be the copy of oldfd, closing newfd first if necessary.
RETURN VALUE
dup and dup2 return the new descriptor, or -1 if an error occurred (in which case, errno is set appropriately).
ERRORS
EBADF oldfd isn't an open file descriptor, or newfd is out of the allowed range for file descriptors.
EMFILE The process already has the maximum number of file descriptors open and tried to open a new one.
WARNING
The error returned by dup2 is different to that returned by fcntl(..., F_DUPFD, ...) when newfd is out of range. On some systems dup2 also
sometimes returns EINVAL like F_DUPFD.
CONFORMING TO
SVr4, SVID, POSIX, X/OPEN, BSD 4.3. SVr4 documents additional EINTR and ENOLINK error conditions. POSIX.1 adds EINTR.
SEE ALSO fcntl(2), open(2), close(2)Linux 1.1.46 1994-08-21 DUP(2)