|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
Redirecting stderr problem
Post 302230048 by phpfreak on Thursday 28th of August 2008 01:50:47 PM
08-28-2008
|
|
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
In bash, I need to send the STDOUT and STDERR from a command to one file, and then just STDERR to another file. Doing one or the other using redirects is easy, but trying to do both at once is a bit tricky. Anyone have any ideas? (9 Replies)
Discussion started by: jshinaman
9 Replies
2. Shell Programming and Scripting
If I forget to set up stderr redirection on execution of a script, is there a way to set that redirection post-exec? In other words, if I have a script running and no errors are being logged... and then I remember that I forgot the 2>&1 on the script... can I turn it on after the fact?
...and... (1 Reply)
Discussion started by: jjinno
1 Replies
3. Shell Programming and Scripting
Friends
I have to redirect STDERR messages both to screen and also capture the same in a file.
2 > &1 | tee file works but it also displays the non error messages to file, while i only need error messages.
Can anyone help?? (10 Replies)
Discussion started by: vikashtulsiyan
10 Replies
4. Shell Programming and Scripting
Doubt regarding using "exec" command to redirect the STDERR to a file. e.g I did it this way.
mystage.sh
#!/bin/sh exec 2>stage.err
....
....
cat stage.err
mv: cannot move `/root/stage' to a subdirectory of itself, `/root/stage_old/stage'
ls: *.zDB: No such file or... (0 Replies)
Discussion started by: snurani
0 Replies
5. Shell Programming and Scripting
I dont know what I am doing wrong but I would like to redirect the stderr output to a file?
the specific command is this
time wget http://www.something.com/somefile.bin
All I want to see is time's output which is stderr so I can see how long the file download took. I've tried redirecting... (2 Replies)
Discussion started by: trey85stang
2 Replies
6. Shell Programming and Scripting
I am trying to redirect the output from stderr to a log file from within a bash script. the script is to long to add 2> $logfile to the end of each command. I have been trying to do it with the command exec 2> $logfile This mostly works. Unfortunately, when a read command requires that anything be... (5 Replies)
Discussion started by: vockleya
5 Replies
7. Shell Programming and Scripting
I'm not a complete novice at unix but I'm not all that advanced either. I'm hoping that someone with a little more knowledge than myself has the answer I'm looking for.
I'm writing a wrapper script that will be passed user commands from the cron...
Ex:
./mywrapper.sh "/usr/bin/ps -ef |... (1 Reply)
Discussion started by: sumgi
1 Replies
8. Shell Programming and Scripting
Hi,
I already searched through the forum and tried to find a answer for my problem but I didn't found a full working solution, thats way I start this new thread and hope, some can help out.
I wonder that I'm not able to find a working solution for the following scenario:
Working in bash I... (8 Replies)
Discussion started by: Boemm
8 Replies
9. Shell Programming and Scripting
Hi folks
I need/want to redirect output (stdout, stderr) from an exec call to separate files. One for stderr only and two(!) different (!) ones for the combined output of stderr and stdout.
After some research and testing i got this so far :
(( exec ${command} ${command_parameters} 3>&1... (6 Replies)
Discussion started by: MDominok
6 Replies
10. UNIX for Beginners Questions & Answers
I know that
mmmmm 2> error.txt
will send the error message to the specified file instead of the screen. However, I have seen
>&2
in some scripts, and I can't get it to do anything. A source said it sends stdout and stderr to a file. What file?
Ubuntu 18.04.2; Xfce 4.12.3;... (11 Replies)
Discussion started by: Xubuntu56
11 Replies
LEARN ABOUT SUNOS
chroot
chroot(1M) System Administration Commands chroot(1M) NAME
chroot - change root directory for a command SYNOPSIS
/usr/sbin/chroot newroot command DESCRIPTION
The chroot utility causes command to be executed relative to newroot. The meaning of any initial slashes (/) in the path names is changed to newroot for command and any of its child processes. Upon execution, the initial working directory is newroot. Notice that redirecting the output of command to a file, chroot newroot command >x will create the file x relative to the original root of command, not the new one. The new root path name is always relative to the current root. Even if a chroot is currently in effect, the newroot argument is relative to the current root of the running process. This command can be run only by the super-user. RETURN VALUES
The exit status of chroot is the return value of command. EXAMPLES
Example 1: Using the chroot Utility The chroot utility provides an easy way to extract tar files (see tar(1)) written with absolute filenames to a different location. It is necessary to copy the shared libraries used by tar (see ldd(1)) to the newroot filesystem. example# mkdir /tmp/lib; cd /lib example# cp ld.so.1 libc.so.1 libcmd.so.1 libdl.so.1 libsec.so.1 /tmp/lib example# cp /usr/bin/tar /tmp example# dd if=/dev/rmt/0 | chroot /tmp tar xvf - ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
cd(1), tar(1), chroot(2), ttyname(3C), attributes(5) NOTES
Exercise extreme caution when referencing device files in the new root file system. References by routines such as ttyname(3C) to stdin, stdout, and stderr will find that the device associated with the file descriptor is unknown after chroot is run. SunOS 5.10 15 Dec 2003 chroot(1M)