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  • Two IP ranges on eth1 configuration for centos 6.2

    - by Trickzzz
    i have a dedicated server, with "Virtuozzo" on it running VPS's. I have: eth0 - which is configured to the internal network, that one is fine. Now I have: eth1 - which has two ranges routed through this device. x.x.134.x (which has 12 IP's sequentially) x.x.132.x (which has 5) eth1: DEVICE="eth1" HWADDR="00:25:90:37:65:67" NM_CONTROLLED="yes" ONBOOT="yes" IPADDR="x.x.134.x" NETMASK="255.255.255.240" GATEWAY="x.x.134.x" I tried using this with another file as well named "ifcfg-eth1:1" in /etc/sysconfig/network-scripts/ any ideas why the containers on eth1:1 would not link up to the network? Virtuozzo also thinks that eth1:1 is the primary network now, which isn't right?

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  • Are there any OpenGL implementations which can use a server to do the rendering?

    - by user1973386
    Assume I have 2 independent machines, one running Debian sid, and the other running Windows 7. The one running Debian sid has a decent graphics card, the Windows 7 machine has no graphics card and a weak processor. The two are connected over a fast local network. Are there any OpenGL implementations, where Windows 7 would use the Debian machine's graphics card to do OpenGL rendering "over the network"?

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  • How to jump back to the first character in *nix command line?

    - by clami219
    When writing a long command in the *nix command line and having to go back to the first character, in order to add something at the beginning (for instance a nohup, when you realize the process will be a long one, or a sudo, when you realize you need root permissions) it can take a long time for the cursor to make its way back to the first character... Is there a short cut that allows you to jump straight there? I'm using a mac, so Home is not an option

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  • zipping a file used by a process

    - by jaganath
    i accidently zipped a log file of process (the process wasnt writing in it though, it writes it only during weekends when the process get killed).I unzipped the file immediately back. will it affect the process when it is trying to write in the log file?

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  • Why does Mac OS X auto-mount the (disabled) home folder?

    - by NStal
    I've just bought a MacBook Pro. Now I'm trying to build up a filesystem (just some path) that looks like my Ubuntu server. By doing so, I can reuse a lot of the scripts I've written before. I found that Mac OS X auto mounts home with map auto_home, which prevents me from even making a symbolic link. I managed to solve this problem from the solution here. It mentioned that Time Machine will auto-exclude the home folder. But I'm wondering why, this is confusing.

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  • How can I tell when an FTP is complete?

    - by identry
    I have a cron job that processes files that my client's upload via FTP to my FreeBSD server. The cron job runs once an hour, and normally processing each file only takes a few seconds. The cron job looks in the client's upload directory and moves any new files to a tmp directory. It then processes the file(s) and moves them into a final directory where they are then available to the public through a website. The problem is, every once in awhile, the cron job runs just as a new file is being uploaded. It moves the half-uploaded file to the tmp directory, and tries to process it, and fails, of course. Question: how can I determine if the uploaded file is complete? The only thing I can think of is checking the file size to see if it's changing, but that seems like a kludge. Is there some sort of flag or something that is set when the upload is complete?

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  • How can I rename files and subdirectories in a copied directory based on changes in the original?

    - by GaryF
    I have a directory structure with many hundreds of files and folders underneath it for organising files (in this case photos). I create backups of that directory structure by rsyncing it to identical copies on an external drives periodically. These drives may be offsite some of the time. I want to restructure and rename the files and directories in the original and then, later, when I have an external drive onsite, be able to run some tool that will cause these structural and naming changes to happen on the backup. If I just us rsync, it'll have to recopy much of the data to the backup drive, which I'd rather avoid due to the sizes involved. How can I get the changes I make to the original directory into the backups, as they become available, without having to recopy/rsync the data?

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  • Supporting Piping (A Useful Hello World)

    - by blastthisinferno
    I am trying to write a collection of simple C++ programs that follow the basic Unix philosophy by: Make each program do one thing well. Expect the output of every program to become the input to another, as yet unknown, program. I'm having an issue trying to get the output of one to be the input of the other, and getting the output of one be the input of a separate instance of itself. Very briefly, I have a program add which takes arguments and spits out the summation. I want to be able to pipe the output to another add instance. ./add 1 2 | ./add 3 4 That should yield 6 but currently yields 10. I've encountered two problems: The cin waits for user input from the console. I don't want this, and haven't been able to find a simple example showing a the use of standard input stream without querying the user in the console. If someone knows of an example please let me know. I can't figure out how to use standard input while supporting piping. Currently, it appears it does not work. If I issue the command ./add 1 2 | ./add 3 4 it results in 7. The relevant code is below: add.cpp snippet // ... COMMAND LINE PROCESSING ... std::vector<double> numbers = multi.getValue(); // using TCLAP for command line parsing if (numbers.size() > 0) { double sum = numbers[0]; double arg; for (int i=1; i < numbers.size(); i++) { arg = numbers[i]; sum += arg; } std::cout << sum << std::endl; } else { double input; // right now this is test code while I try and get standard input streaming working as expected while (std::cin) { std::cin >> input; std::cout << input << std::endl; } } // ... MORE IRRELEVANT CODE ... So, I guess my question(s) is does anyone see what is incorrect with this code in order to support piping standard input? Are there some well known (or hidden) resources that explain clearly how to implement an example application supporting the basic Unix philosophy? @Chris Lutz I've changed the code to what's below. The problem where cin still waits for user input on the console, and doesn't just take from the standard input passed from the pipe. Am I missing something trivial for handling this? I haven't tried Greg Hewgill's answer yet, but don't see how that would help since the issue is still with cin. // ... COMMAND LINE PROCESSING ... std::vector<double> numbers = multi.getValue(); // using TCLAP for command line parsing double sum = numbers[0]; double arg; for (int i=1; i < numbers.size(); i++) { arg = numbers[i]; sum += arg; } // right now this is test code while I try and get standard input streaming working as expected while (std::cin) { std::cin >> arg; std::cout << arg << std::endl; } std::cout << sum << std::endl; // ... MORE IRRELEVANT CODE ...

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  • What are the dark corners of Vim your mom never told you about?

    - by Sasha
    There is a plethora of questions where people talk about common tricks, notably this one. However, I don't refer to commonly used shortcuts that a noob would find cool. I am talking about a seasoned unix user (be she/he a developer, admin, both, etc), who thinks (s)he knows something 99% of us never heard or dreamed about. Something that not only makes his/her work easier, but also is COOL and hackish. After all, vim resides in the most dark-corner-rich OS in the world, thus it should have intricacies that only a few privileged know about and want to share with us.

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  • How to build this project?

    - by Ali Shafai
    Hi, I've been a visual studio developer for long and just trying to understand how things are in linux/unix worl. I found an open source project (Gcomandos) in source forge and tried to build it. when I download the source, I get these files: 16/02/2007 05:16 PM 25,987 aclocal.m4 16/02/2007 05:17 PM 127,445 configure 16/02/2007 05:16 PM 1,925 configure.ac 17/03/2010 03:48 PM <DIR> gComandos 16/02/2007 05:16 PM 332 gcomandos.pc.in 25/11/2006 10:03 PM 9,233 install-sh 16/02/2007 05:16 PM 353 Makefile.am 16/02/2007 05:17 PM 20,662 Makefile.in 16/02/2007 05:16 PM 1,019 Makefile.include 25/11/2006 10:03 PM 11,014 missing I am now lost. I tried making the .am or the .in files, but GnuMake says there is nothing to make. I tried running the shell scripts, but I got errors. Any guidance appreciated.

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  • Installing Daemons

    - by Shahmir Javaid
    Dear Stackoverflowers, A simple link would be nice for me to understand how to install my C++ program as a deamon in UNIX, now i know some will say this should be on SERVERFAULT but as far as i understand it i need the init.d shell script to actually create the start and stop for the daemons. But if you guys can show me a simple shell script for the daemon and the file directories every thing required is associated with, that would be great. I was going to do this http://www.linux.com/archive/feed/46892 but if you read the comments every one is moaning x( . P.S. ive already done the required code for C++ to run as a daemon i just need to know how to actually install it as a daemon. At the moment im using crontab which is just not a good idea for the future of my problem. Thanks in advance

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  • A/UX cc compiler errors on trivial code: "declared argument argc is missing"

    - by Fzn
    On a quite ancient UNIX (Apple A/UX 3.0.1 for 680x0 processors) using the built-in c compiler (cc), this issue arrises. Here is the code I'm trying to compile: #include <stdlib.h> #include <stdio.h> int main() int argc; char **argv; { if (argc > 1) puts(argv[1]); return (EXIT_SUCCESS); } And here is the output I get: pigeonz.root # cc -c test.c "test.c", line 5: declared argument argc is missing "test.c", line 6: declared argument argv is missing Using a more modern prototype did not help, nor did the manual page, nor a quick google search. What am I doing wrong?

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  • oracle pl sql dump result into file

    - by CC
    Hi. I'm working on a pl sql stored procedure. What I need is to do a select, use a cursor and for every record build a string using values. At the end I need to write this into a file. I try to use dbms_output.put_line("toto") but the buffer size is to small because I have about 14 millions lines. I call my procedure from a unix ksh. I'm thinking at something like using "spool on" (on the ksh side) to dump the result of my procedure, but I don' know how to do it (if this is possible) Anyone has any idea? Thank alot. C.C.

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  • Python: unix socket -> broken pipe

    - by Heinrich Schmetterling
    I'm trying to get Python socket working as an alternative to calling the command line socat. This socat command works fine: echo 'cmd' | sudo socat stdio <path-to-socket> but when I run this python code, I get an error: >>> import socket >>> s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) >>> s.connect(<path-to-socket>) >>> s.send('cmd') Traceback (most recent call last): File "<stdin>", line 1, in <module> socket.error: (32, 'Broken pipe') Any ideas what the issue is? Thanks.

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  • Unix substr in shell script?

    - by KnockKnockWhosThere
    I have a string like sample.txt.pgp and I want to return sample.txt in a shell script. Is there a substr function? Like, if I did substr('sample.txt.pgp', -4, 0), is it supposed to return sample.txt? Right now it isn't, so I'm wondering if I have the syntax wrong, or maybe substr isn't a function?

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  • Behavior of a pipe after a fork()

    - by Steve Melvin
    When reading about pipes in Advanced Programming in the UNIX Environment, I noticed that after a fork that the parent can close() the read end of a pipe and it doesn't close the read end for the child. When a process forks, does its file descriptors get retained? What I mean by this is that before the fork the pipe read file descriptor had a retain count of 1, and after the fork 2. When the parent closed its read side the fd went to 1 and is kept open for the child. Is this essentially what is happening? Does this behavior also occur for regular file descriptors?

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  • script unable to find directories/files when running from qsub cluster script

    - by user248237
    I'm calling several unix commands and python on a python script from a qsub shell script, meant to run on a cluster. The trouble is that when the script executes, something seems to go awry in the shell, so that directories and files that exist are not found. For example, in the .out output files of qsub I see the following errors: cd: /valid/dir/name: No such file or directory python valid/script/name.py python: can't open file 'valid/script/name.py': [Errno 2] No such file or directory so the script cannot cd into a dir that definitely exist. Similarly, calling python on a python script that definitely exists yields an error. any idea what might be going wrong here, or how I could try to debug this? thanks very much.

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  • sed regex to match ['', 'WR' or 'RN'] + 2-4 digits

    - by Karl
    Hi I'm trying to do some conditional text processing on Unix and struggling with the syntax. I want to acheive Find the first 2, 3 or 4 digits in the string if 2 characters before the found digits are 'WR' (could also be lower case) Variable = the string we've found (e.g. WR1234) Type = "work request" else if 2 characters before the found digits are 'RN' (could also be lower case) Variable = the string we've found (e.g. RN1234) Type = "release note" else Variable = "WR" + the string we've found (Prepend 'WR' to the digits) Type = "Work request" fi fi I'm doing this in a Bash shell on Red Hat Enterprise Linux Server release 5.5 (Tikanga) Thanks in advance, Karl

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