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• Can't mount home after trying to resize (bad geometry: block count exceeds size of device).

  - by Lynn

  This is on a fresh computer (super computer actually). It got to me with 15T on the home mount and 50G on the root. I tried allocating 7T to root and resizing (since I'm putting a local yum repo on this machine as it has no internet access nor will it ever). I tried following the instructions here: Centos 6.3 disk space allocation but something went wrong and the home won't mount again. Instead I get from dmesg | tail: EXT4-fs (dm-2): bad geometry: block count 4294967295 exceeds size of device (1342177280 blocks) df -h nets this output: Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root 7.0T 3.6G 6.6T 1% / tmpfs 190G 216K 190G 1% /dev/shm /dev/sda1 485M 38M 422M 9% /boot I didn't have any files on /dev/mapper/VolGroup-lv_home. Will simply running mke2fs fix it to be mountable? What sort of options should I run it with. I've never resized volumes before or used mke2fs. I don't want to make this mess worse.

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• Filtering serial port io

  - by mr odus

  I am currently working on a project where I communicate with hardware via a com port on its respective pc(win xp or 7) It is a fairly large project and sifting through the log file can be a bit of pain. This is my current setup. I use putty to do the actual serial communication, and write it to a log file. Then using MinGW Msys I filter it using tail -f "puttyLog" | grep -i "search term" Is there a better way to do this? I mean specifically filtering the input in realtime. Not that mine is terrible, but it still involves having to read from a log and sometimes there have been hangups where it will be delayed for a minute or 2. I have used software in the past with a main io window and then internal filter panels, but can no longer remember or find it.

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• Copy to USB memory stick really slow?

  - by Eloff

  When I copy files to the USB device, it takes much longer than in windows (same usb device, same port) it's faster than USB 1.0 speeds (1MB/s) but much slower than USB 2.0 speeds (12MB/s). To copy 1.8GB takes me over 10 minutes (it should be < 3 min.) I have two identical SanDisk Cruzer 8GB sticks, and I have the same problem with both. I have a super talent 32GB USB SSD in the neighboring port and it works at expected speeds. The problem I seem to see in the GUI is that the progress bar goes to 90% almost instantly, completes to 100% a little slower and then hangs there for 10 minutes. Interrupting the copy at this point seems to result in corruption at the tail end of the file. If I wait for it to complete the copy is successful. Any ideas? dmesg output below: [64059.432309] usb 2-1.2: new high-speed USB device number 5 using ehci_hcd [64059.526419] scsi8 : usb-storage 2-1.2:1.0 [64060.529071] scsi 8:0:0:0: Direct-Access SanDisk Cruzer 1.14 PQ: 0 ANSI: 2 [64060.530834] sd 8:0:0:0: Attached scsi generic sg4 type 0 [64060.531925] sd 8:0:0:0: [sdd] 15633408 512-byte logical blocks: (8.00 GB/7.45 GiB) [64060.533419] sd 8:0:0:0: [sdd] Write Protect is off [64060.533428] sd 8:0:0:0: [sdd] Mode Sense: 03 00 00 00 [64060.534319] sd 8:0:0:0: [sdd] No Caching mode page present [64060.534327] sd 8:0:0:0: [sdd] Assuming drive cache: write through [64060.537988] sd 8:0:0:0: [sdd] No Caching mode page present [64060.537995] sd 8:0:0:0: [sdd] Assuming drive cache: write through [64060.541290] sdd: sdd1 [64060.544617] sd 8:0:0:0: [sdd] No Caching mode page present [64060.544619] sd 8:0:0:0: [sdd] Assuming drive cache: write through [64060.544621] sd 8:0:0:0: [sdd] Attached SCSI removable disk

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• bridge to share WiFi internet connection over eth0

  - by rubo77

  In this script there is implemented that you create a mesh network and connect other machines to your device to serve an internet connection with dhcp: echo "starting bridge to share internet connection over eth0" ifconfig eth0 up promisc brctl addbr br-freifunk brctl addif br-freifunk bat0 brctl addif br-freifunk eth0 echo "internet starting, this may take some minutes due to latency..." echo "(use" echo "tail -f /var/log/syslog" echo "in another window for debugging)" echo echo dhclient br-freifunk echo "The error 'Rather than invoking init scripts through /etc/init.d...' can be ignored:" dhclient br-freifunk # without bridge: dhclient bat0 This works fine with the freifunk-mesh network. But how can I serve internet in a normal case? I would like to connect to any open Wifi I find with my network-manager or wicd (yes, with the graphical GUI) and then start a small script that creates a bridge to my network-out on my laptop I use Ubuntu and my networkcards are eth0 and wlan0

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• MySQL will Stop working after being Started

  - by user115343

  i am new to a webserver thing. I use Centmin mod to install nginx + mariaDB to setup small wordpress blog,the first day it is ok,there are nice "hello world" on my box's IP,but today i have checked that mysql is stop working so i immediately start it again but it is stoped again after some minutes! i use this tutorial but still,it will stop after some period here is my log [root@rylai ~]# tail -f /var/log/mysqld.log 120326 16:19:05 [Note] Plugin 'PBXT_STATISTICS' is disabled. 120326 16:19:05 [Note] Plugin 'InnoDB' is disabled. 120326 16:19:06 [Note] Event Scheduler: Loaded 0 events 120326 16:19:06 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.2.10-MariaDB-mariadb107' socket: '/var/lib/mysql/mysql.sock' port: 3306 (MariaDB - http://mariadb.com/) 120326 16:20:36 mysqld_safe Number of processes running now: 0 120326 16:20:36 mysqld_safe mysqld restarted 120326 16:20:39 [Note] Plugin 'ARCHIVE' is disabled. 120326 16:20:39 [Note] Plugin 'FEDERATED' is disabled. 120326 16:20:40 mysqld_safe mysqld from pid file /var/lib/mysql/rylai.pid ended I only access mysql on CLI,didnt install any panel yet

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• Cannot connect to FTP server from external host

  - by h3

  I have a FTP server (vsftpd) setuped on a Linux box (Ubuntu server). When I try to connect with a computer on the same network everything works fine as expected. But as soon the IP is external it won't connect.. I first assumed the port was blocked, but then: localserver:$ sudo tail -f /var/log/vsftpd.log Wed Jan 13 14:21:17 2010 [pid 2407] CONNECT: Client "xxx.xxx.107.4" remotemachine:$ netcat svn-motion.no-ip.biz 21 220 FTP Server And it hangs there .. Is there any other ports other than 21 that are required to be open ?

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• Obtain reference to Parent object during instantiation

  - by GoldBishop

  I have a situation where a custom class is a property of another class. What i need to be able to do, if it is possible at all, is obtain a reverse to the "parent" class (ie the the class that holds the current class as a property). For Instance: Public Class Class1 ... public readonly property Prop11 as Class2 public property Prop12 as String ... End Class Public Class Class2 ... private _par as Class1 private _var21 as string ... Public Sub New(...) me._par = ???? ... End Sub public readonly property Prop21 as string Get return me._par.Prop12 & me._var21 End Get End Property ... End Class Ultimately, i am trying to access other properties within Class1 from Class2 as they do have substance for information from within Class2. There are several other classes within Class1 that provide descriptive information to other classes contained within it as properties but the information is not extensible to all of the classes through Inheritance, as Class1 is being used as a resource bin for the property classes and the application itself. Diagram, lazy design ;): Application <- Class1.Prop12 Application <- Class1.Prop11.Prop21 Question: Is it possible to get a recursion through this design setup?

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• Centos + CPanel results in php always running as fgci, instead of cli, as expected

  - by quamis

  I'm having problems with a server configured by someone else. It uses CPanel, and it has Apache+PHP. For some reason, when running php -v as a user, i get "cli" as handler # php -v | head -n 1 PHP 5.3.27 (cli) (built: Oct 15 2013 16:06:48) If a make a PHP script with echo shell_exec("php -v | tail -n 1"), i get PHP 5.3.27 (cgi-fcgi) (built: Oct 15 2013 16:22:16) Why the cli/fcgi difference? I need to fix this so that scripts ran by the apache user would be running as "cli", not "fcgi". As a side-note, i'm not sure how php got installed, because in the package list i see another version installed, instead of the pne reported by php -v # rpm -qa | grep php [.... other packages...] cpanel-php53-5.3.17-5.cp1136.x86_64 rebuild_phpconf --current: /usr/local/cpanel/bin/rebuild_phpconf --current Available handlers: suphp dso fcgi cgi none DEFAULT PHP: 5 PHP4 SAPI: none PHP5 SAPI: dso SUEXEC: enabled RUID2: not installed redhat-release: # cat /etc/redhat-release CentOS release 6.4 (Final) possibly related to http://superuser.com/questions/665809/centos-6-4-running-php-for-root-as-cgi-fcgi-not-cli

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• Traverse tree with results. Maybe type in Java?

  - by Angelo.Hannes

  I need to check a tree's node state. It can either be OK or NOT_OK. But that state is dependent on its children. So for a node to be OK, every of its children needs to be OK. If one or more of its children is NOT_OK the whole node is NOT_OK. To determine the state of a node I need to aggregate some properties of the node. So I thought of two possible implementations. And they are more or less covered in this question: Why is Option/Maybe considered a good idea and checked exceptions are not? Exception I could pass the properties up the recursion path, and throw an exception if something went wrong. Maybe I implement an Maybe type and let it either hold an error or the aggregated properties. Maybe it is more an Either. I tend towards the last option. And I'm thinking of an enum with two objects. Where I can additionally set those aggregated properties. Am I on the right track? I'm not familiar with the new JDK8 functional stuff. But I'm stuck on JDK7 anyway, so please focus on JDK7.

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• A generic Re-usable C# Property Parser utility [on hold]

  - by Shyam K Pananghat

  This is about a utility i have happened to write which can parse through the properties of a data contracts at runtime using reflection. The input required is a look like XPath string. since this is using reflection, you dont have to add the reference to any of your data contracts thus making pure generic and re- usable.. you can read about this and get the full c# sourcecode here. Property-Parser-A-C-utility-to-retrieve-values-from-any-Net-Data-contracts-at-runtime Now about the doubts which i have about this utility. i am using this utility enormously i many places of my code I am using Regex repeatedly inside a recursion method. does this affect the memmory usage or GC collection badly ?do i have to dispose this manually. if yes how ?. The statements like obj.GetType().GetProperty() and obj.GetType().GetField() returns .net "object" which makes difficult or imposible to introduce generics here. Does this cause to have any overheads like boxing ? on an overall, please suggest to make this utility performance efficient and more light weight on memmory

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• Could crosslinking using very general anchor texts be a reason for a drop in rankings?

  - by webmasters

  I have crosslinked 20 sites and I thought I have been penalized for this, asked this question and some experienced members told me maybe that crosslinking may not necessarily be the reason. The sites are on same host, different C class IP and every site in linked to each other. Each site targets long tail kewords. Site 1 - BMW Used Cars - and my area Site 2 - WW Used Cars - and my area And so on... When I crosslinked them (in the sidebar), I did it for the users; instead of repeating the terms used cars and my location over and over (since my users are targeted) I just crosslinked them using the brand: BMW, WW. Targeting locally, my niches are not overly competitive, so I did not need to many external links to rank on various positions on the 1st page. I'm thinking that when I chose to link using only the brand, google might have thought I wanted to actually rank for BBW and WW, hence the drop in my targeted local traffic. Could this be? I now have no-followed the links and I am noticing a slight recovery, but if it's not a interlinking penalty it would be a shame not to benefit from my links.

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• Linux Software Raid runs checkarray on the First Sunday of the Month? Why?

  - by mgjk

  It looks like Debian has a default to run checkarray on the first Sunday of the month. This causes massive performance problems and heavy disk usage for 12 hours on my 2TB mirror. Doing this "just in case" is bizzare to me. Discovering data out of sync between the two disks without quorum would be a failure anyway. This massive checking could only tell me that I have an unrecoverable drive failure and corrupt data. Which is nice, but not all that helpful. Is it necessary? Given I have no disk errors and no reason to believe my disks have failed, why is this check necessary? Should I take it out of my cron? /etc/cron.d# tail -1 /etc/cron.d/mdadm 57 0 * * 0 root [ -x /usr/share/mdadm/checkarray ] && [ $(date +\%d) -le 7 ] && /usr/share/mdadm/checkarray --cron --all --quiet Thanks for any insight,

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• s3cmd run on command line not on cron

  - by Jonar

  Many have said that the problem is with environment but I still can't seem to solve this problem. BTW I am using Ubuntu 9.10 login as user, then sudo -s using this command: s3cmd put file s3://bucket worked! now here is the simple script intended for testing: #! /bin/bash env >/tmp/cronjob.log s3cmd put file s3://bucket issuing the command crontab -e * * * * * /opt/script 2>&1 | logger Then using tail to syslogs Dec 3 23:22:01 ubuntu CRON[10795]: (root) CMD (/opt/script 2&1 | logger) But by verifying it on s3Fox Organizer, the file is not uploaded. (I tried changing the #! /bin/sh (no effect), putting crons on /etc/crontab (no effect), setting HOME=/home/user (no effect) What are other options to try? Or other ways to debug this problem. Thanks

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• Search for specific call in asterisk log files

  - by chiborg

  In my Asterisk log file, I have a line like this (truncated): Executing [123@mycontext:1] Set("SIP/myhost-b7111840", "__INCOMINGCLI=4711") Now I want to do the following filtering while looking at the log file with tail -f: Match lines with a specific value for "INCOMINGCLI", storing the call ID (the "SIP/myhost-b7111840" part) Output all subsequent lines that contain the call ID. As a bonus, having a grep-like option like -A would be nice. I could do that easily in various programming languages, but how would I do it with standard UNIX commands like sed or awk? Can it be done with these commands?

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• Error: kernel headers not found. (But they are in place)

  - by Guandalino

  I'm trying to install the Guest Additions in VirtualBox 4.04. Host OS is Ubuntu desktop 11.04 64bit, guest OS is Ubuntu server 11.10 64bit. $ sudo ./VBoxLinuxAdditions.run After some output this line is printed: The headers for the current running kernel were not found. But the headers are installed, at least accordingly to dpkg: $ dpkg --get-selections | grep linux-headers linux-headers-3.0.0-12 install linux-headers-3.0.0-12-server install linux-headers-server install The running kernel is: $ uname -a Linux foobar 3.0.0-12-server #20-Ubuntu SMP Fri Oct 7 16:36:30 UTC 2011 x86_64 x86_64 X86_64 GNU/Linux How do I fix things so that Guest Additions installer is able to find kernel headers? Update: added full output. The headers for the current running kernel were not found. If the module compilation fails then this could be the reason. Building the main Guest Additions module ...done. Building the shared folder support module ...fail! (Look at /var/log/vboxadd-install.log to find out what went wrong) Installing the Window System drivers ...fails! (Could not find the X.Org or XFree86 Window System). I don't care for fail #2, because that's a server and I don't need X server. But I need shared folder support. Some further detail: $ tail /val/log/vboxadd-install.log .......... cc1: some warnings being treated as errors make[2]: *** [/tmp/vbox.0/vfsmod.o] Error 1 make[1]: *** [_module_/tmp/vbox.0] Error 2 make: *** [vboxsf] Error 2

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• How do I 'see' an external USB drive connected directly to my Broadband Router?

  - by The Cougar Kid

  This is a very frustrating problem! I have a small home network with several dual boot Ubuntu / Windows computers. I have recently upgraded my Broadband connection and the new router permits the direct attachment of an external USB drive which can back up all of the household's computers. There are no problems when booted under Windows, and there were no problems with older versions of UBUNTU, but since upgrading to 11.10 I can no longer "see" the drive. I used to find it via Network / Windows Network / Home / name of Router, but under 11.10 the same method yields an error message Unable to mount location Failed to retrieve share list from server. Can anyone help please? Starting Nmap 5.21 ( http://nmap.org ) at 2011-12-21 10:06 GMT Stats: 0:02:02 elapsed; 0 hosts completed (1 up), 1 undergoing Service Scan Service scan Timing: About 50.00% done; ETC: 10:10 (0:01:56 remaining) Nmap scan report for 192.168.1.254 Host is up (0.0097s latency). Not shown: 998 filtered ports PORT STATE SERVICE VERSION 554/tcp open rtsp? 7070/tcp open realserver? Service detection performed. Please report any incorrect results at http://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 152.38 seconds sudo tail -n 30 /var/log/syslog [sudo] password for alaric: Dec 21 10:05:42 UPSTAIRS2U wpa_supplicant[882]: WPA: Group rekeying completed with 00:01:3b:8b:63:1a [GTK=TKIP]

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• cat contents of one file into another file

  - by Attila O.

  I have a large (binary) file that has some corruption near the beginning. Then, I have a second, smaller file that I obtain by starting to download the same file again, but interrupt after I have enough bytes to fix the original one. My question is, how do I simply overwrite the beginning of the large file with the contents of the second, smaller file? I could use cat, tail and head, but that would create a copy of the file. There must be a more efficient way. Oh yes, and I'm looking for a linux command-line solution, if that wasn't obvious. I'm using bash, but I have other shells if that helps.

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• Statsd, Graphite and graphs

  - by w00t

  I've setup Graphite and statsd and both are running well. I'm using the example-client.py from graphite/examples to measure load values and it's OK. I started doing tests with statsd and at first it seemed ok because it generated some graphs but now it doesn't look quite well. First, this is my storage-schema.conf: pattern = .* retentions = 10:2160,60:10080,600:262974 I'm using this command to send data to statsd: echo 'ssh.invalid_users:1|c'| nc -w 1 -u localhost 8126 it executes, I click Update Graph in the Graphite web interface, it generates a line, hit again Update and the line disappears. If I execute the previous command 5 times, the graph line will reach 2 and it will actually save it. Again running the same command two times, graph line reaches 2 and disappears. I can't find what I have misconfigured. The intended use is this: tail -n 0 -f /var/log/auth.log|grep --line-buffered "Invalid user" | while read line; do echo "ssh.invalid_users:1|c" | nc -w 1 -u localhost 8126; done

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• Server responses "bus error" to every command

  - by Temnovit

  I have a linux machine dedicated to MySQL server with a pretty high load. Today I woke up and was terrified to see, that database server is down. I could connect to it via SSH, but it was responding with bus error to each and every command. [root@r1304 home]# ls Bus error [root@r1304 home]# tail /var/log/messages Bus error [root@r1304 home]# reboot Bus error [root@r1304 home]# free -m Bus error [root@r1304 home]# chkdisk Bus error I went to Data Center and did a hard reset, which seemed to help, but after a half an hour situation reapeated and now I can't even connet via SSH anymore. Any ideas what this could be? how to diagnose such a problem and what are possible fixes? Server has 32 GB RAM, 2xSSD drives with software RAID UPDATE According to Zabbix, when MySQL died, number of processes stated to increase drammaticaly, until I did a hard reset. What could those be? Number of processes

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• Why doesn't postfix use my smtp_generic_maps?

  - by RichardTheKiwi

  What have I set up incorrectly? >postconf -n .... smtp_generic_maps = regexp:/etc/postfix/rewrite .... >cat /etc/postfix/rewrite /.*/ [email protected] >echo "test" | mail -s "test" [email protected] >tail -f /var/log/mail.log Dec 8 05:56:01 xxxxxxxxxxxx postfix/pickup[20227]: E9272709284: uid=501 from=<yyyy> Dec 8 05:56:01 xxxxxxxxxxxx postfix/cleanup[20270]: E9272709284: message-id=<[email protected]> Dec 8 05:56:01 xxxxxxxxxxxx postfix/qmgr[20228]: E9272709284: from=<[email protected]>, size=331, nrcpt=1 (queue active) Dec 8 05:56:03 xxxxxxxxxxxx postfix/smtp[20272]: E9272709284: to=<[email protected]>, relay=mailinator.com[72.51.33.80]:25, delay=1.1, delays=0.02/0.01/0.48/0.58, dsn=2.0.0, status=sent (250 Ok) FYI, I have reloaded postfix many times sudo postfix reload Note: This is on OSX 10.7.5

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• Why is quicksort better than other sorting algorithms in practice?

  - by Raphael

  This is a repost of a question on cs.SE by Janoma. Full credits and spoils to him or cs.SE. In a standard algorithms course we are taught that quicksort is O(n log n) on average and O(n²) in the worst case. At the same time, other sorting algorithms are studied which are O(n log n) in the worst case (like mergesort and heapsort), and even linear time in the best case (like bubblesort) but with some additional needs of memory. After a quick glance at some more running times it is natural to say that quicksort should not be as efficient as others. Also, consider that students learn in basic programming courses that recursion is not really good in general because it could use too much memory, etc. Therefore (and even though this is not a real argument), this gives the idea that quicksort might not be really good because it is a recursive algorithm. Why, then, does quicksort outperform other sorting algorithms in practice? Does it have to do with the structure of real-world data? Does it have to do with the way memory works in computers? I know that some memories are way faster than others, but I don't know if that's the real reason for this counter-intuitive performance (when compared to theoretical estimates).

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• searchd under runit continues writing to the runit's log

  - by Eugene

  searchd (Sphinx) run file: #!/bin/sh set -e APP_PATH=/srv/application TARGET_USER=user exec chpst -u $TARGET_USER /usr/bin/searchd --pidfile --nodetach --config $APP_PATH/current/config/production.sphinx.conf tail /var/log/sphinx/current 2014-06-07_18:13:56.87885 precached 9 indexes in 0.497 sec 2014-06-07_18:13:57.13740 precached 9 indexes in 0.497 sec 2014-06-07_18:13:57.88113 precached 9 indexes in 0.497 sec 2014-06-07_18:13:57.89167 precached 9 indexes in 0.497 sec 2014-06-07_18:13:59.75555 precached 9 indexes in 0.497 sec 2014-06-07_18:13:59.81554 precached 9 indexes in 0.497 sec 2014-06-07_18:14:00.33466 precached 9 indexes in 0.497 sec ... it continues to write the same line until sv stop sphinx ... Everything works fine, seachd starts and responds to the queries. But how to make logs to be less repetitive? When I start Sphinx manually it prints the "precached 9 indexes" just once.

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• Using foldr to append two lists together (Haskell)

  - by Luke Murphy

  I have been given the following question as part of a college assignment. Due to the module being very short, we are using only a subset of Haskell, without any of the syntactic sugar or idiomatic shortcuts....I must write: append xs ys : The list formed by joining the lists xs and ys, in that order append (5:8:3:[]) (4:7:[]) => 5:8:3:4:7:[] I understand the concept of how foldr works, but I am only starting off in Functional programming. I managed to write the following working solution (hidden for the benefit of others in my class...) : However, I just can't for the life of me, explain what the hell is going on!? I wrote it by just fiddling around in the interpreter, for example, the following line : foldr (\x -> \y -> x:y) [] (2:3:4:[]) which returned [2:3:4] , which led me to try, foldr (\x -> \y -> x:y) (2:3:4:[]) (5:6:7:[]) which returned [5,6,7,2,3,4] so I worked it out from there. I came to the correct solution through guess work and a bit of luck... I am working from the following definition of foldr: foldr = \f -> \s -> \xs -> if null xs then s else f (head xs) (foldr f s (tail xs) ) Can someone baby step me through my correct solution? I can't seem to get it....I already have scoured the web, and also read a bunch of SE threads, such as How foldr works

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• VMware Workstation 7&8&9 does not generate /etc/vmware/network upon installation

  - by dash17291

  When I install VMware Workstation on Arch linux Virtual ethernet is not working. $ sudo tail /var/log/vnetlib Aug 28 22:20:33 VNLFileExists - Cannot check for file or directory: /etc/vmware/networking , error: No such file or directory Aug 28 22:20:33 VNLNetCfgLoad - Import file does not exist Aug 28 22:20:33 VNL_Load - Error loading the vnet configuration, file used: /etc/vmware/networking Aug 28 22:20:33 VNLNetCfgUnload - Requested cache is not loaded Database file is not present. Failed to initialize Aug 28 22:20:41 VNLFileExists - Cannot check for file or directory: /etc/vmware/networking , error: No such file or directory Aug 28 22:20:41 VNLNetCfgLoad - Import file does not exist Aug 28 22:20:41 VNL_Load - Error loading the vnet configuration, file used: /etc/vmware/networking Aug 28 22:20:41 VNLNetCfgUnload - Requested cache is not loaded Required modules compiled. Previously I have copied that file or directory (I don't remember) from a working installation, but now I need a real solution. It's strange for me, may be a hardware issue also because with Ubuntu the same thing happens on the same computer.

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• How to get the Host value inside ~/.ssh/config

  - by iconoclast

  Within a ~/.ssh/config or ssh_config file, %h will give you the HostName value, but how do you get the Host ("alias") value? Why would I want to do that? Well, here's an example Host some_host_alias HostName 1.2.3.4 User my_user_name PasswordAuthentication no IdentityFile ~/.ssh/some_host_alias.rsa.id LocalCommand some_script.sh %h # <---- this is the critical line If I pass %h to the script, then it uses 1.2.3.4, which fails to give it all the options it needs to connect to that machine. I need to pass some_host_alias, but I can't find the % variable for that. (And: yes! I'm aware of the risk of recursion. That's solved inside the script.) UPDATE: Kenster pointed out that I could just hard-code the Host value as an argument to the script. Of course this will work in the example I gave, but it won't work if I'm using pattern matching for the Host.

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