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  • IOError: [Errno 32] Broken pipe

    - by khati
    I got "IOError: [Errno 32] Broken pipe" while writing files in linux. I am using python to read each line a of csv file and then write into a database table. My code is f = open(path,'r') command = command to connect to database p = Popen(command, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE, env=env) query = " COPY myTable( id, name, address) FROM STDIN WITH DELIMITER ';' CSV QUOTE '"'; " p.stdin.write(query.encode('ascii')) *-->(Here exactly I got the error, p.stdin.write(query.encode('ascii')) IOError: [Errno 32] Broken pipe )* So when I run this program in linux, I got error "IOError: [Errno 32] Broken pipe" . However this works fine when I run in windows7. Do I need to do some configuration in Linux sever? Any suggestions will be appreciated. Thank you.

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  • Meta Information within Apache config files

    - by purpletonic
    I have a number of VirtualHosts config files controlling sites served on Ubuntu server using Apache. I'm writing a ruby script to parse these files, and then display information about the site being hosted. One of the things I'd like to do is display a user friendly name for each site for easier identification, rather than relying on ServerName, or ServerAlias, to determine the site name. Does anyone know of an Apache configuration directive that exists for this purpose, or for displaying other related meta information about a config file, or will I have to use comments rather than a directive instead? Thanks!

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  • NFS caching on Ubuntu

    - by stream
    We run a bunch of ubuntu servers (mostly 8.04 LTS) which all mount an nfs share at /nfs. We use the nfs primarily for two purposes: symlinking config files (such as apache vhosts) reading & writing uploaded files This all works great except it makes us fully dependent on the central NFS server (which is a DRBD cluster with heartbeat failover from primary to secondary, but we've still seen issues). What we'd like is if we could mount the NFS through some local caching layer which would make any file which had previously been read remain available even if /nfs isn't. Writes could be disabled for this period. Searching around it looks like cachefilesd may be an option. Unfortunately, it's only packaged for ubuntu 9.10 & 10.04 it looks like. I was also looking for a FUSE-based solution which might fit the bill, but hadn't found anything yet. Any suggestions would be greatly appreciated!

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  • MySQL equivalent to .pgpass, or automatic authentication in a cron job for mySQL

    - by Ibrahim
    I'm writing a bash script to back up my databases. Most are postgresql, and in postgres there's a way to avoid having to authenticate by creating a ~/.pgpass file which contains the postgres password. I put this in root's home directory and made it chmod 0600, so that root could dump the postgres databases without having to authenticate. Now I want to do something similar for mysql, although I only have one mysql database. How can I do this? I don't want to specify the password on the command line for mysqldump because this is part of a script that might be somewhat visible to other users. Is there a better way (i.e. built in to mysql) to do this than make a file that only root can read and then read that to get the mysql password, and then use that in the bash script as a variable?

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  • MySQL equivalent to .pgpass, or automatic authentication in a cron job for mySQL

    - by Ibrahim
    I'm writing a bash script to back up my databases. Most are postgresql, and in postgres there's a way to avoid having to authenticate by creating a ~/.pgpass file which contains the postgres password. I put this in root's home directory and made it chmod 0600, so that root could dump the postgres databases without having to authenticate. Now I want to do something similar for mysql, although I only have one mysql database. How can I do this? I don't want to specify the password on the command line for mysqldump because this is part of a script that might be somewhat visible to other users. Is there a better way (i.e. built in to mysql) to do this than make a file that only root can read and then read that to get the mysql password, and then use that in the bash script as a variable?

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  • Most efficient way to connect an ISAPI Dll to a windows service

    - by Mike Trader
    I am writing a custom server for a client. They want scalability so I must use a thread pool and probably I/O completion port to regulate it. The main requirement is that a windows service manage the HTTP requests for a number of reasons. An example of one would be that a client session spans many requests and continuity must be maintained. Another would be that the ISAPI Dll will be in the IIS address space and so it's code will be lean and very carefully implemented. The extensive processing in the Windows service may get unruly for the duration of the lengthy development. If the service crashes it will not take out IIS. Anyway, the remaining decision is how to have these two processes communicate. We have talked about pipes, tcp, global memory and even a single pipe with multiplexed data ala FastCGI. Would love to hear anyones experience with a decision like this.

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  • What happens when the USB key or SD card I've installed VMware ESXi on fails?

    - by ewwhite
    An SD (SDHC) card installed in an HP ProLiant DL380p Gen8 server running VMware ESXi just failed. I encountered some rather ominous looking messages on the vCenter console and in the HP ProLiant ILO event log... Lost connectivity to the device ... backing the boot filesystem. As a result, host configuration changes will not be saved to persistent storage. Embedded Flash/SD-CARD: Error writing media 0, physical block 848880: Stack Exception. VMware advocates the use of USB and SD (SDHC) boot devices for ESXi. It was one of the main reasons the smaller footprint ESXi was developed (versus the older ESX). I've spent much time highlighting the differences between ESXi's installable and embedded modes to coworkers and clients. However, these failures do seem to happen. In this case, this is my third instance. Luckily, this is a vSphere cluster with SAN storage. What steps should be taken to remediate this failure?

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  • Running Batch File As An Administrator…

    - by WidmarkRob
    I successfully created a batch file to flush my DNS. I have added a pause, I noticed in the title bar of the console window… It's not running as administrator. I've already tried a couple of variations of this… Just a little guidance would be most appreciated. I remember reading a blog somewhere, it said something about capitalization wasn't important… Is camel casing important in writing batch files? @echo off echo. pause CD.. CD.. echo. runas /user:<Administrator> ipconfig /flushdns echo. pause echo.

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  • Running perfmon continuously with periodic reports

    - by Sal
    I have a question very similar to this one, but I want to continuously run perfmon, during reboots and throughout the day. Further, I'd like to generate a perfmon report every 10 mins or so. The original question tells me how to run perfmon when the server is restarted, but I don't know how to make perfmon continuously run while throwing periodic files. I've tried setting it as a scheduled task that needs to be done every 10 mins, but this is too sloppy, and when the scheduled task kicks another instance, the current perfmon report writer crashes, and I get a garbage report. I've also tried writing a sloppy batch script that would fire off the task at scheduled intervals, but this is the same problem as the scheduled task. I'm sure I'm just missing something silly, but I don't see it. Ideas? (If it helps, I'm running Windows 7 locally, and I'm trying to set up the processes for boxes running Windows 2008.)

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  • Is there a utility that displays hotkeys for the current application?

    - by Alwin
    To speed up my compyuter use I'm trying to use as many hotkeys as possible. But because I'm working in many applications it is really hard to remember all those shortcuts. I'm looking for a program that looks at what application is currently in use by me, and displays a list of possible hotkeys I want to use. Example: I'm writing a document in Word, and the utility program shows a list of hotkeys I could use in Word. With such a program I could learn the shortcut keys much faster. Does such a utility exist?

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  • Running perfmon continuously with periodic files

    - by Sal
    I have a question very similar to this one, but I want to continuously run perfmon, during reboots and throughout the day. Further, I'd like to generate a perfmon report every 10 mins or so. The original question tells me how to run perfmon when the server is restarted, but I don't know how to make perfmon continuously run while throwing periodic files. I've tried setting it as a scheduled task that needs to be done every 10 mins, but this is too sloppy, and when the scheduled task kicks another instance, the current perfmon report writer crashes, and I get a garbage report. I've also tried writing a sloppy batch script that would fire off the task at scheduled intervals, but this is the same problem as the scheduled task. I'm sure I'm just missing something silly, but I don't see it. Ideas? (If it helps, I'm running Windows 7 locally, and I'm trying to set up the processes for boxes running Windows 2008.)

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  • How to use the autocomplete feature for VBA function in Excel 2007 with Excel Add-In

    - by Nam G. VU
    (cloning from question on SO) I created a function in VBA. I want Excel 2007 to show the Autocomplete when writing this function in the cell's Excel. Detail as How to use the autocomplete feature for VBA function in Excel 2007 with Excel Add-In (.xlam)? ps. In Excel 2010, the autocomplete works In Excel 2007 with Excel Macro-Enabled Worksheet (.xlsm), the autocomplete works. The test file here. But, in Excel 2007 with Excel Add-In (.xlam), the autocomplete NOT works. The test file here.

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  • Running a powershell script at startup

    - by RandellK02
    I am writing a script to remove a computer from the domain, rename it, then add it back. It works fine when I set the trigger to AtLogOn but when I switch to AtStartUp I run into some issues. I get this error when it restarts to run the first scheduled task: 0x8007051F: There are currently no logon servers available to service the logon request. I suspect the script tries to run with no network connection set up so I tested using the RandomDelay parameter, and it worked like its suppose to. I cant rely on a random delay so I am looking for an alternative. Is there a way to test the network status before the script begins or a way to delay the script a specific amount of time? I am using Register-ScheduledJob provided by Powershell 3.0 Thanks in advance

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  • automysqlbackup not working weirdly on shared host

    - by KPL
    I'm on HostGator and I have not-root-level SSH access. I manually setup automysqlbackup in a /home/user/automysqlbackup folder. Created a file called runbackup in the same folder, chmod +x'ed it. The content : /home/user/automysqlbackup/automysqlbackup /home/user/automysqlbackup/myserver.conf Now, when I run ./runbackup from shell, no email is sent. I've setup a daily cron job. The crontab line reads - 24 06 * * * /home/user/automysqlbackup/runbackup When the crontab is run, I do get an email, but, the subject is WARNING: Error Reported - MySQL Backup Log and SQL Files for localhost - 012-03-19_06h24m The email does have an attachment, but it just has the SQL for creating tables. No data in the several rows at all. I don't know what wrong I'm doing and this is freaking me out! I tried writing a custom script as well, using this guide, but mutt doesn't send email, then. The OS used by HostGator is CentOS.

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  • Security permissions for remote shared folders

    - by Tomas Lycken
    I have two servers running Windows Server 2003, and I want copy files from one server (A), programmatically with a windows service running under the Local System account, to a shared folder on the other (B). I keep getting "access denied" errors, and I can't figure out what security settings I need to set to open the shared folder for writing. This is what I've done on the recieving end: On A, right-click on the folder to share, choose the tab "Sharing" and select "Share this folder". Set a share name. Click "Permissions", add the group "Everyone" and give it full control. I tried choosing the "Security" tab to give some permissions there as well, but the "Add" dialog only finds local users, despite the fact that B shows up in the "Workgroup computers" dialog. After further inspection, this is the case also for the "Permissions" dialog under the "Sharing" tab (are they the same?).

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  • Useful scripts for Sikuli

    - by Ivo Flipse
    Thanks to Lifehacker I came across Sikuli which is described as: Sikuli is a visual technology to search and automate graphical user interfaces (GUI) using images (screenshots). The first release of Sikuli contains Sikuli Script, a visual scripting API for Jython, and Sikuli IDE, an integrated development environment for writing visual scripts with screenshots easily. Sikuli Script automates anything you see on the screen without internal API's support. You can programmatically control a web page, a desktop application running on Windows/Linux/Mac OS X, or even an iphone application running in an emulator. As this looks very promising, perhaps complementary to AutoHotKey I'm curious what scripts you guys will come up with. Especially since this program is portable and could solve "simple" Super User problems. Example script from their documentation: setThrowException(True) setAutoWaitTimeout(10000) switchApp("System Preferences.app") click() click() click() click() wait() type("192.168.0.1\t") type("255.255.255.0\t") type("192.168.0.254\t") click()

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  • Linux networking "jail" for a single process

    - by halp
    I need to tune up a networking app for network specific things like: make it use a DNS server different than the default one from /etc/resolv.conf make sure it does not try to connect to certain hosts/ports using tcp/udp connections I know I can get away with just modifying /etc/resolv.conf and writing some iptables rules, but going for a default DENY firewall policy for outgoing IP packets can trigger malfunctions in other services running on the server. I know I can set up a virtual machine with a whole OS and run my app there, but it seems a bit overkill. Is it possible to have a networking "jail" for a single app (think single Linux process) that could accept iptables-like rules for network traffic (think in terms of IP packets and above) allowed to and from this particular app? Maybe this is achievable through some dynamically loaded library that can deal with the networking layer, the same manner tsocks does, but more fine-grained?

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  • Find out what fields are available to IIS 7 Advanced Logging from Modules

    - by Grummle
    You can install the Advanced Logging module for IIS 7. Once installed you have the option to define new fields from several different sources. One of those sources is other modules. What I am unable to figure out is how to get a list of the fields that the other modules 'publish'. There a boat load of modules installed by default and I have to imagine they are publishing some data I would care to know about (hopefully UrlRoutingModule publishes what I'm specifically looking for). Also as an aside if you know how to or know where good documentation on writing .net HttpModules that publish custom fields I'd love to see/hear about it.

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  • How to hide distribution group from "All Groups" Address Book in Outlook 2010?

    - by cparker4486
    I'm working with Outlook 2010 and Exchange 2010 and while writing this post I found another post on the topic but it was for Exchange 2007. It mentioned Address List Segregation which, as it turns out, is not supported in Exchange 2010. So it seems another method is required. I've successfully hidden a distribution group from the GAL by removing the Authenticated Users group but the group is still visible in the Address Book called "All Groups". I would expect it to be hidden in all address books not just the GAL. Are there any other security groups I should remove to hide it from All Groups? To give visibility in the GAL I am manually adding the user (the group is being used for Send As purposes). In the image below the green line represents where the group is visible and the red line indicates the opposite.

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  • F5/BigIP rule to redirect affinity-bound users from INACTIVE pool node to other ACTIVE node

    - by j pimmel
    We have several server nodes set up for the end users of our system and because we don't use any kind of session replication in the app servers, F5 maintains affinity for users with the ACTIVE node the client was first bound to. At times when we want to re-deploy the app, we change the F5 config and take a node out of the ACTIVE pool. Gradually the users filter off and we can deploy, but the process is a bit slow. We can't just dump all the users into a different node because - given the update heavy nature of the user activities - we could cause them to lose changes. That said, there is one URL/endpoint - call it http://site/product/list - which we know, when the client hits it, that we could shove them off the INACTIVE node they had affinity with and onto a different ACTIVE node. We have had a few tries writing an F5 rule along these lines, but haven't had much success so i thought I might ask here, assuming it's possible - I have no reason to think it's not based on what we have found so far.

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  • Bash vs. Gnu screen : Replace Ctrl-A with Ctrl-Shift-A

    - by Stefan Lasiewski
    I'm a new user to GNU Screen. I've been using Bash for a very long time, and I want to give GNU Screen a try. As you know, GNU Screen uses 'C-a' (Control-A) as as the command character. Trouble is, this interferes with the Line Editing feature in Bash (and GNU Readline), because Control-A in Bash will Move to the start of the line." I know I can set the Command Character to another key sequence, like "^Q" or "``" (Backtick), but I have trouble finding another key sequence which isn't already in use (^Q is used by the terminal, backtick is used when writing shell scripts). It appears that the Command Character may only be one or two characters in length. Can I set the GNU Screen control character to be something like "Control-Shift-A"? (I can't use more then one hyperlink yet, so I cannot link to the Bash documentation)

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  • How do I convert a Linux disk image into a sparse file?

    - by endolith
    I have a bunch of disk images, made with ddrescue, on an EXT partition, and I want to reduce their size without losing data, while still being mountable. How can I fill the empty space in the image's filesystem with zeros, and then convert the file into a sparse file so this empty space is not actually stored on disk? For example: > du -s --si --apparent-size Jimage.image 120G Jimage.image > du -s --si Jimage.image 121G Jimage.image This actually only has 50G of real data on it, though, so the second measurement should be much smaller. This supposedly will fill empty space with zeros: cat /dev/zero > zero.file rm zero.file But if sparse files are handled transparently, it might actually create a sparse file without writing anything to the virtual disk, ironically preventing me from turning the virtual disk image into a sparse file itself. :) Does it? Note: For some reason, sudo dd if=/dev/zero of=./zero.file works when cat does not on a mounted disk image.

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  • Recovering with DDRescue Cannot Complete (write error: Read-only file system)

    - by c00lryguy
    I'm trying to recover a corrupt VDI using vdfuse to mount the VDI and using dd_rescue to rescue the borked partition. dd_rescue seems to be working fine but once it reached about half of the partition, it just STOPs and gives the following error: ddrescue: write error: Read-only file system Wait.. what? It suddenly turns the FS it is writing the recovered partition to into a read-only file system. Well... why? Will I never be able to finish this? What's going on?

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  • Filtering junk mail in Outlook 2007

    - by Faruz
    I keep getting mail which I try to filter as junk. Problem is, it is sent from my e-mail address while writing that the name of the sender is "Viagra yada yada yada ([email protected])" I can't add a rule to outlook according to sender's name, right? Is there any other way I can filter those e-mails (I can't add a rule to junk-mail my own e-mail address). The subject of the e-mails keeps changing in the following formats: "Faruz 76% discount now!" "Faruz 80% discount now!" "Now! 78% discount Faruz" (They seem to have infinite ideas of saying the same thing... :) ) So I also seem to have problems filtering according to subject. ideas?

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  • Computer hobby and more?

    - by John
    I have been a fulltime student recently working on graduate work to complete a graduate degree. While continuing my studies I have maintained my computer hobby. However, recently my computer hobby has been threatening to turn into a full-fledged side business. Because I am starting to have people come to me for computer help who I have never met before (who generally heard word-of-mouth from other people whose computers I looked at) I am seriously considering putting my conditions for working on a computer into writing (for potential damage control and perhaps liability reasons). Are there any standards for this that I should reference? Should responsibility be waived for times when the computer is left in my care or any time I look at a machine? Any advice you can provide here would be appreciated. What other lessons have you learned that I should be aware of in relation to helping people while continuing my studies as a hobby? Thank you in advance.

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