General :: Able To Write On Stdout But Not In A File

Aug 16, 2011

I want to keep a trace of the URL I visit, so I use a command line like this:

tcpdump -ien1 -v -X 'tcp port 80' | sed -nl
's/^.0x[0-9a-f]{4}:.{43}(.)$/1/p' |perl break.pl |perl -pe
's/(GET|POST).(.*?).HTTP/1....Host:.([a-zA-Z._0-9-]*)../"
BEGURL

[Code]....

I also tried redirecting stdout and stderr to /tmp/out, it's still empty. The file has write access. I have no idea what it can be. Is there anything else than stdout and stderr?

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General :: How To Echo The File To Stdout

Sep 26, 2010

I have a process which logs output to log.txt. If I want to see the process's status in real-time, is there a way to echo that output to stdout instead of opening the log in a text editor and constantly reloading?

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General :: Script To Output Both The Stderr And Stdout To The Same Text File?

Aug 5, 2011

Am having issues getting the output from a script to be logged in a file. I need the script to output both the stderr and stdout to the same text file.

At present I have the following script:

Code:
#!/bin/bash
echo TR3_1 > printers.txt
snmpget -v 1 -c public 10.168.**.* SNMPv2-SMI::mib-2.43.10.2.1.4.1.1 &>> printers.txt

[Code].....

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Programming :: Redirecting Stdout To File And Terminal And Stderr To File?

Apr 20, 2010

I have a script where I want to redirect stdout to the terminal and also to a log file aswell as redirecting stderr to the same log file but not the terminal.I have the following code which I found on the net which redirects both stderr and stdout to a file and the logfile,

Code: if [ -p $PIPE1 ]
then
rm $PIPE1

[code]...

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Software :: Redirect Stdout To File Produces Blank File

Dec 27, 2008

I cannot redirect output from commands such as iptables, iptables-save, and ifconfig. For example, any of the following DOESN'T work ( as root ):

Code:
iptables > tmp
iptables-save > tmp
ifconfig > tmp
The file tmp is ALWAYS blank, that is, 0 bytes in size. Wackier things DO work, such as:

Code:
echo "`iptables-save`" > tmp
iptables-save | tee tmp
Other commands like:

Code:
ls > tmp
DO work as expected.

Note that this problem happens regardless if I log-in remotely via ssh or locally on the computer in question. I am clueless as to what is causing this. Any ideas?The box is running 2.6.25-14.fc9.i686 and boots to runlevel 3. The modifications I've made to the box since installing the OS are things like compiling/installing latest OpenSSH,OpenSSL,httpd,BerkeleyDB,subversion,zlib etc -- nothing really out of the ordinary I'd say.

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Programming :: Blacklist End Up In File And $a End Up In Stdout?

Jan 22, 2010

In this example, why does blacklist end up in the file blacklist and $a end up in stdout?

[code]...

The desired result is to have a file containing the results of lsmod which had the first word on the line beginning with snd_ copied into another file preceded by the word blacklist.

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Ubuntu Servers :: Log Stdout To File During Boot?

Nov 30, 2010

do you know of a way to redirect stdout during boot time to have a log of the entire process?

I have a remote server which is not booting and I would like to know at which point it gets stucked, what could I do?

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Programming :: Cannot Redirect All Stdout And Stderr Into File

May 12, 2009

I have a little complex Makefile system. A parent Makefile call dozens of Makefiles in subdirctories. And the subdirctory Makefile calles shell script to do real building. I want to grab all output this Makefile system generate. So, i employ "make 2>&1 > make.log". but not all output messages are filed into make.log. The message generated by sub-makefile called shell script cannot be recorded into make.log. And another curiouse thing is, if i launch "make 2>&1 > make.log" in a perl script, all output do be sent into make.log.

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Ubuntu Servers :: Limit Size Of Log File When Redirecting Stdout?

Jun 7, 2010

I have a command line server that logs to stdout, which I start along the lines of ./server > log.txt

What I want to do is limit the size of log.txt, without modifying the server.

I am assuming there must be some kind of tool already that lets me do this, something like where I can pass in my server, the output file and a size limit? If so, can anyone enlighten me?

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Programming :: STDIN, STDOUT, STDERROR Redirection For Scripting - Bash: Log.txt: No Such File Or Directory

Sep 7, 2010

I'm writing a script to execute bash commands in the PHP CLI. I would like to suppress errors from bash and write my own error message if an error occurs. So far I have this (assuming log.txt doesn't exist!):

Code:

tac log.txt 2>/dev/null

Which works as expected, tac kicks up an error but the error is suppressed, but when I use this:

Code:

tac < log.txt 2>/dev/null

I get:

Code:

bash: log.txt: No such file or directory

The tac error is suppressed but bash still gives me a dirty error.

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General :: Remove Write-Protected File - Will It Actually Delete The Password File?

Jul 30, 2010

When I ls -l /etc/passwd, -rw-r--r-- 1 root root /etc/passwd When I login as myself, and rm /etc/passwd, it asks: rm: remove write-protected file '/etc/passwd'? If I say yes, will it actually delete the passwd file?

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General :: Log Rotation Of Stdout?

Jun 1, 2011

I have a Linux program which can write information to stdout and stderr.

I have a shell script which redirects that output to a file in /var/log. (Via >> and 2>&1.)

Is there a way to make that log file rotate? (max size, then switch to a different file, keep only a limited number of files)

I've seen a few answers which talk about the logrotate program, which sounds good, but they also seem to be focused on programs which are generating log files internally and handle HUP signals. Is there a way to make this work with a basic output redirection script?

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Fedora :: Erroneous Write During File Extend. Write -1 Instead Of 4096

Nov 17, 2009

Ive installed Gaussian '03 on fedora Core 10, but I'm unable to run it. It aborts and i get the following error

Code:

Erroneous write during file extend. write -1 instead of 4096
Probably out of disk space.
Write error in NtrExt1

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General :: Can't Write To A File

May 24, 2011

I'm writing a script/plugin for Nagios for testing a WebLogic server.. I redirect some output to a file, and then i read that file to get some data, but i can't seem to write to that file with my script :s... this is the most important code

[Code]...

* EDIT * When i execute this script through a local terminal (PuTTy), it works but when i execute it from Nagios, it doesn't work..

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General :: How To Write A Script File

Apr 16, 2010

I want to write a shell script file for the below subject

subject / situation : i have many users say user1, user2, user3, user4 and so on... within my /home dir

Within a user dir say.. /home/user1 i have many unwanted files. these unwanted files start with the name core for eg. core2324, core9789, core 9079 etc.. i need to delete them.

I want to write an automated script for this, which can do the same. How to write a script which can delte these unwanted core files which exist in all user dirs.

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General :: Windows Access The File From Ubuntu Got Read Only Even Though Have A Full Permission To Read, Write And Execute The File?

Feb 4, 2010

What are the possible problem when Windows access the file from Ubuntu got Read Only even though have a full permission to read, write and execute the file? Ubuntu to Ubuntu accessing the file there is no problem only Windows got a problem.

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General :: Application To Support Writing To /dev/stdout Or /dev/fd1 Or Is That Handled Transparently By The OS?

Mar 26, 2011

I tried this command to print the buffer of an existing screen session to stdout but I don't know why it doesn't print anything.

screen -x lftp -X hardcopy /dev/fd/1
screen -x lftp -X hardcopy /dev/stdout

It works if I use a regular file instead, so why doesn't it print to stdout when I use /dev/fd/1? I do this with other applications don't have an option to write to stdout and it works, so what does GNU/Screen do that makes it not work?

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General :: StartServer.sh Command Stays Printing Since The Server Is Up On Stdout

Feb 22, 2011

I have a starServer.sh command in a shell script along with a bunch of command. Th startServer.sh command prints out stuff on stdout and stays printing since the server is up. However eve though I want to start the server I want it to continue executing the commands after ./startServer.sh in the same flow.

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General :: Redirect Stdout/stderr Of Multiple Commands In One Shot?

Jun 3, 2011

I have several commands in a bash script, and in the middle of the script there are several commands whose output and error streams I want to redirect to a file. I think I could simply add '>> myfile.txt' to the end of every command, but is there a way to set it before that block of commands, then reset the streams to their original state at the end of that block?

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General :: File Permission. Write And Execute Only?

Jan 11, 2011

Is there any use if a file has only write and execute permission and not read permission?

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General :: Read/Write Xml File Through C++ Code?

Mar 18, 2011

I am trying to write a C++ Code to read write a XML file in C++.I researched a lot and find xerces is used for that but I am not able to write the code for that.Please provide me some links on how to run a code that R/W a xml file in C++.

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General :: Write File To A Specific Sector?

Jun 28, 2010

I need to copy a file into a Flash memory which is connected to my computer via USB. The file must start at a specific sector.
Can anyone guide me how to do this? (it can be through a C program, a line command, or any other way)

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General :: Can't Write File Despite Proper Permissions

Mar 29, 2010

Under debian i did this:

casey@t400:~/programs$ ls -l
-rw-rw-r-- 1 root root 2071 2010-03-28 05:15 urlgetter.cpp

Then

casey@t400:~/programs$ gedit urlgetter.cpp

and upon attempting to save the file, I get the error

"Could not save[...] You do not have the permissions necessary to save the file."

but I am a member of the group root:

casey@t400:~/programs$ cat /etc/group | grep root
root:x:0:casey

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General :: Write A Script Which Will Add A Content To A File?

Jun 13, 2010

How would i write a script which will add a following content to a file.File Before running script.

Code:
acpi = 1
apic = 1
builder = 'hvm'[code]....

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General :: Write Audio ISO File From .wav Files?

Mar 15, 2011

I have a machine with no CD writer. I have some .wav files that I want to make an audio ISO from.

How would I go about this, preferably from the command line?

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General :: Root (sudo) Can't Write To File It Created?

Mar 9, 2011

Debugging some of my scripts after upgrading from Debian Lenny to Ubuntu 10.04. In so doing, I tripped over this "problem," the solution to which may give me a clue to others.

On a bash shell command line I created a file thusly:

sudo touch zero_file

and it lists as expected with default permissions 0644:

-rw-r--r-- 1 root root 0 2011-03-09 11:18 zero_file

But then this command fails

sudo echo abcdef >>zero_file
-bash: zero_file: Permission denied

I can place the command (minus the "sudo") in a script & run it under the auspices of sudo & it works. Am I missing something re the stdin redirection when using sudo?

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General :: Write A Log File Of A User Interactive Process Using Tee ?

Sep 30, 2010

I want to write the sequence of operation of a user interactive process (Question asked by the process and answers user entered) in to a log file.

I used tee command, Precess1 | tee -a FileName

This write only the Question asked by the process. Does anybody know how to write the user inputs also to the same file, synchronized?

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General :: Write A Command To Set The /bin/tetris File Executable

Feb 12, 2011

How do you write a command to set the /bin/tetris file executable

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General :: Write A Script To Compress Any File With 10 MB Size To Tar.gz?

Jun 7, 2010

write a script to compress any file with 10 MB size to tar.gz

Say /var/log/tes directory has a file with 10 MB I want it to compress to tar.gz

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General :: Write File And Display In Terminal At Same Time

Sep 30, 2010

How can we write a file and display in terminal at the same time. Like for example, when I do..
php -f file.php > testfile
That should save right.. but I want to display it in terminal otherwise.

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