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• Ctrl+Z and fg to append commands

  - by avilella

  I would like to know what is the behaviour of Ctrl+Z and fg in bash when wanting to append commands to be executed after a running command has finished. For example, in the sequence for commands below, I would expect the console to display "1", then "2", then "3", then "4", but I only get the last command, echo 4, after sleep 30 finishes: avilella@magneto:~$ sleep 30 && echo 1 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 2 sleep 30 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 3 sleep 30 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 4 sleep 30 4 Any ideas?

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• Programmatically get the WLAN config of a machine and use netsh to setup new profile

  - by Maestro1024

  How can I programmatically get the wireless LAN configuration of a machine and use netsh to setup new profile? I am having trouble getting the netsh command to set the ssid of a new card. I installed the drivers and plugged it in. I see in ipconfig it says the "media is disconnected" (fair enough). I then send the following command netsh wlan connect name=profile1 ssid=myNetwork interface="Wireless Network Connection 2" problem is I get an error "There is no profile "profile1" assigned to the specified interface. What is a profile for a wireless card? What should I set it to? How can I get my SSID set and connected for the card?

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• Microphone - static background noise suppression

  - by user1873947

  My soundcard is Realtek ALC 892. On Windows 7 I use official Realtek drivers, on Linux I use PulseAudio (on Ubuntu 13.10). On both Windows and Linux, when I enable microphone boost +30db (required because my microphone is quiet), I get very annoying and loud background noise (I also confirmed the background noise with Audacity on both systems). However, Windows Realtek drivers have noise suppression option which works (after enabling it, Audacity shows no background noise and my ears also confirm that there is no background noise). My question is how can I enable background noise suppression in ALSA/PulseAudio? Is there any module I can install or maybe there is a setting for it that can be enabled in config file? I can't find solution for it and this is the only thing that prevents me from switching to Linux completely - as I talk using microphone a lot and on Windows the Realtek software removes the background noise completely and PulseAudio doesn't remove it, which means the recorded voice on Linux is very bad. I know I could buy better soundcard and microphone, but as I said, Windows Realtek drivers remove the noise on software level in real time (ie no noise when talking on TeamSpeak3/Steam/whatever voip programme) so I hope that there is such option on Linux as well. Thanks in advance! This is also crossposted on Unix StackExchange

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• Remote File Copy - Win Server 2008

  - by Scott

  I'd like to copy backup archives from a remote server to my client machine. In the past, I've installed an FTP server on the remote machine and directed local server backups to dump into that directory. I'd then FTP in from my client machine. Just wondering if there is a simpler way to do this using Win 7 (Client) Win Server 2008? Robocopy? RDC command line options? For example, I can easily remote desktop in and drag the files from the server to my local machine. If there is an easy command line way to do this, then I don't have to setup an FTP server which is ideal. Thanks.

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• ffmpeg open webcam using YUYV but i want MJPEG

  - by Pavel

  I need ffmpeg to open webcam (logitech c910) in MJPEG mode, because the webcam can give ~24 using MJPEG "protocol" and only ~10 fps using the YUYV. Can i choose between them using ffmpeg command line? xx@(none) ~ $ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'YUYV' Name : YUV 4:2:2 (YUYV) Index : 1 Type : Video Capture Pixel Format: 'MJPG' (compressed) Name : MJPEG My current command line: ffmpeg -y -f alsa -i hw:3,0 -f video4linux2 -r 20 -s 1280x720 -i /dev/video0 -acodec libfaac -ab 128k -vcodec libx264 /tmp/web.avi ffmpeg produces corrupted h264 stream when i record from webcam, but normal h264 strem when i record from x11grab. Another codecs (mjpeg, mpeg4) works well with webcam... But this is another story.

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• How do I type Home on a MacBook Pro?

  - by Daryl Spitzer

  What combination of keys (fn, control, option, command, arrow keys) is the equivalent of the Home key on a MacBook Pro?

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• Sendmail is refusing connection after configuring SMTP relay

  - by coder

  I'm setting up sendmail on my home computer to use with my webserver. I've set it to use my SMTP server provided by my hosting company. If I use the following command, it works sendmail -Am -t -v and then I enter the to and from emails. But if I try the following, it does not work. sendmail -v [email protected] < test.txt The TO email is the same as in the earlier command, but in this case I haven't specified a FROM e-mail, which I think is the problem. My guess is that it's sending the mail from user@localhost causing the smtp server to reject it. If so, how do I make it send from [email protected]?

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• Error: Cannot find a valid baseurl for repo: updates in ffmpeg installation

  - by athomas14super

  Hi I have problem installing ffmpeg. I follow this url: https://www.crucialp.com/resources/tutorials/server-administration/how-to-install-ffmpeg-ffmpeg-php-mplayer-mencoder-flv2tool-LAME-MP3-Encoder-libog.php Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# yum install subversion ruby ncurses-devel Loading "installonlyn" plugin Setting up Install Process Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg -bash: svn: command not found [root@02e7709 src]# svn command not found and throws error Error: Cannot find a valid baseurl for repo: updates I am installing in fedora core 6 64 bit

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• Powershell and long-running external tools?

  - by leeand00

  I'm trying to compact a MS-Access database using JetComp.exe using a powershell script. Here is the operative lines: # 4. Run JetComp LogWrite("Begin: Running JetComp") .\JETCOMP.EXE -src: $srcDB -dest: $dstDB | Out-Null #Run this command and wait for it to finish... IfErrorExit("Error Compacting Database") LogWrite("End: Running JetComp") The JETCOMP.EXE program seems to complete long before it is actually finished and the $dstDB ends up being smaller than the compact should even make it. Initially ($srcDB) it's about 1.8 GB and by the time the command finishes it's about 300,000 kb (about 0.29 gb) that's a pretty long way off from 1.8 gb which when compacted manually ends up being about 1.6 gb. Is there some sort of timeout I don't know about in powershell scripts? P.S. I know that when running JETCOMP.EXE manually, that the system often detects it as "not responding" even though it's actually getting the job done, and waiting long enough will allow it to complete.

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• How do I make my USB Bluetooth dongle work in Ubuntu 11.04 ? (Can't init device hci0: Connection timed out (110)) [closed]

  - by MaikoID

  I've a USB bluetooth dongle root@maiko-cce-lin:~# lsusb | grep Bluetooth Bus 001 Device 007: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) that isn't working properly, hardly-ever it works but stops working in my next reboot. what I've tried it isn't software blocked root@maiko-cce-lin:~# rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: hci0: Bluetooth Soft blocked: no Hard blocked: no my device is recognized by hciconfig root@maiko-cce-lin:~# hciconfig -a hci0: Type: BR/EDR Bus: USB BD Address: 00:1F:81:00:01:1C ACL MTU: 1021:4 SCO MTU: 180:1 DOWN RX bytes:330 acl:0 sco:0 events:8 errors:0 TX bytes:24 acl:0 sco:0 commands:30 errors:22 Features: 0xff 0x3e 0x09 0x76 0x80 0x01 0x00 0x80 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: Link mode: SLAVE ACCEPT but I can't turn on my hci interface root@maiko-cce-lin:~# hciconfig hci up Can't init device hci0: Connection timed out (110) I don't understand why.. the hcitool command doesn't show any device. root@maiko-cce-lin:~# hcitool dev Devices: I've tried to restart my bluetooth service too with this command and make all these previous commands again but without success. root@maiko-cce-lin:~# service bluetooth restart * Stopping bluetooth [ OK ] * Starting bluetooth [ OK ] root@maiko-cce-lin:~# The dongle works if you disconnect it from usb, wait a few seconds and connect it again. so there must be better solution for it ( a solution not involving physically removing the dongle!)

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• Why does "quickly share --ppa share" abort with a "can't create" error?

  - by desgua

  I can not figure out what I am doing wrong. The package builds ok with quickly package, I could submit it, but I can not update my ppa. Here is what I got: desgua@desguai7:~/quickly/sbk$ quickly share --ppa sbk Get Launchpad Settings Launchpad connection is ok ..........An error has occurred when creating debian packaging ERROR: can't create or update ubuntu package ERROR: share command failed Aborting Edit The name of my ppa was wrong, but even using ppa:desgua/sbk still doesn't work: desgua@desguai7:~/quickly/sbk$ quickly share --ppa ppa:desgua/sbk Get Launchpad Settings Traceback (most recent call last): File "/usr/share/quickly/templates/ubuntu-application/share.py", line 101, in launchpad = launchpadaccess.initialize_lpi() File "/usr/lib/python2.7/dist-packages/quickly/launchpadaccess.py", line 91, in initialize_lpi allow_access_levels=["WRITE_PRIVATE"]) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 539, in login_with credential_save_failed, version) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 359, in _authorize_token_and_login service_root, cache, timeout, proxy_info, version) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 198, in __init__ credentials, service_root, cache, timeout, proxy_info, version) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/resource.py", line 460, in __init__ self._wadl = self._browser.get_wadl_application(self._root_uri) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 299, in get_wadl_application response, content = self._request(url, media_type=wadl_type) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 242, in _request str(url), method=method, body=data, headers=headers) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 211, in _request_and_retry url, method=method, body=body, headers=headers) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1414, in request (response, new_content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 126, in _request LaunchpadOAuthAwareHttp, self)._request(*args) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 130, in _request redirections, cachekey) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1196, in _request (response, content) = self._conn_request(conn, request_uri, method, body, headers) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1138, in _conn_request raise ServerNotFoundError("Unable to find the server at %s" % conn.host) httplib2.ServerNotFoundError: Unable to find the server at api.launchpad.net ERROR: share command failed Aborting Any ideas? How could I troubleshot this error?

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• Why won't the floppy mount?

  - by dboarman-FissureStudios

  The 1.44Meg floppy won't mount in my Nautilus file browser. When I try to mount it, it says there is no media in the drive. Yet, I can write to the floppy through the terminal using the 'cp' command. I can enter the command: mount -t ext2 /floppy and it mounts. I have also run a check and the disk itself is 100% clean. So, why can't I get the nautilus browser to open up the floppy? Is there a way to see the actual floppy from the terminal?

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• CentOS 6.5 proxy bypass/no_proxy not working

  - by Naruto Uzumaki

  I am running CentOS 6.5 on my desktop. I've set the Network Proxy using the network proxy application provided under Preferences. I've also set the following exceptions: localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16 But whenever I am using wget (I'm testing the proxy settings using using wget) then wget tries to connect to the proxy for private addresses, but wget localhost works fine and doesn't use the proxy. I also removed all the proxy settings and set the proxy in the shell: export http_proxy="<proxy_url>:<port>" export https_proxy="<proxy_url>:<port>" export no_proxy="localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16" It work when I use the command wget <external_url> or wget localhost but fails when I use the command wget <private address from the $no_proxy variable>. I also tried setting the variables in Ubuntu 14.04 also and facing the same issue. Regards,

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• "svn: Cannot negotiate authentication mechanism" for OSX CLI and WinXp TortoiseSVN, but linux CLI works

  - by dacracot

  I had a working subversion server which used the passwd file which stores passwords in clear text. My requirements changed so that passwords now need to be encrypted. I did everything according to the book to use SASL, or so I believe, but now only the linux command line can authenticate. My OSX users, which also use command line, and my WinXp users, which use TortoiseSVN get errors. Linux versions are 1.6.11. OSX versions are 1.6.17. And TortoiseSVN versions are 1.7.4. /opt/subversion/QRpage/conf/svnserve.conf: [general] anon-access = none auth-access = write realm = ABC [sasl] use-sasl = true min-encryption = 128 max-encryption = 256 /etc/sasl2/svn.conf: pwcheck_method: auxprop auxprop_plugin: sasldb sasldb_path: /etc/sasldb2 mech_list: DIGEST-MD5 Then I add new users via: saslpasswd2 -c -f /etc/sasldb2 -u ABC dacracot But for instance OSX users get this error trying to check out: $ svn co svn://svn.nowhere.org/QRpage svn: Cannot negotiate authentication mechanism

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• Scripts on UNC paths take very long to run

  - by Álvaro G. Vicario

  I have several scripts in UNC paths (from Windows batch files to PHP scripts). No matter how I run them (double click on explorer, my editor's run command menu or Windows command prompt) they take really long to start running (like 14 seconds). Once they get started they run normally. This doesn't happen if I run them from mapped drives. I'm using Windows XP Professional SP3 inside an Active Directory domain and files are hosted in a Windows Server box (not sure about the version, it's an HP dedicated file server with bundled OS). Why does it happen? Is there a way to speed up things while using UNC paths?

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• WOL not working

  - by Maciej Swic

  I have a Marvell Yukon integrated NIC and i have installed the WOL package on my freeBSD-based NAS. I'm trying to wake my PC using the command "wol M:A:C:A:D:D:R". Command line spits back that it is "waking" however nothing happens. I found no reference to WOL whatsoever in BIOS and i enabled Magic Packet WOL in windows on that interface. Also double-checked MAC addr and that i entered it in the correct format in "wol". I'm on Windows 7. What next? =/

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• Encryption of OS X to Windows SMB traffic and password

  - by Brian

  I connected to a Windows Server 2008 R2 shared folder from a Mac OS X Mountain Lion computer over the Internet using this command: mount -t smbfs //user@server/path/to/share local_folder Is traffic encrypted by default? What settings do I look at (if any) to know whether it was encrypted? If it wasn't encrypted, what's the easiest way to encrypt it? Was the password I typed at the command line encrypted? Update: sysadmin1138 has addressed the password question. Does anyone know how I can tell if the traffic itself is being encrypted?

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• CentOS listen to everything on the wire

  - by Poni

  I know there's a native command on linux that will output (to stdout) every "event" related to a certain network interface (be it eth0 etc'). Like there's tail -f <file> to listen on file changes.. I just can't find it. I want to see all events, incoming packets, even dropped ones. At lowest level possible. In every protocol (TCP, UDP etc'). I think WireShark is a bit too big for this as I need something very simple just to see the events, it's for testing. What's the command?

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• Strange Misleading Error[XML -2018/ AC-10006] when doing the R12 Cloning

  - by [email protected]

  During the recent Multi Node to Single Node R12 Clone, Encountered an strange error. When doing the database portion of the clone. Below command 'adclonectx.pl' creates the Context file perl adclonectx.pl contextfile=$ORACLE_HOME/appsutil/SOURCE_CONTEXT_FILE.xml template=$ORACLE_HOME/appsutil/template/adxdbctx.tmp pairsfile=$ORACLE_HOME/appsutil/clone/pairsfile.txt initialnode   When running the same command, It dumped the below error,   file:/tmp/tmpCtxClone.xml<Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected. AC-10006: Exception - org.xml.sax.SAXParseException: file:/tmp/tmpCtxClone.xml<Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected. thrown while creating OAVars object for file: /tmp/tmpCtxClone.xml The new database context file has been created :   /opt/oracle/product/11.1.0_IOFT/appsutil/IOFT_frws35ta.xml   At first site, I suspected that the issue is with format of the source xml file. Hence compared with the working XML file. Result is clean. Below portion of the error struck me Thrown while creating OAVars object for file: /tmp//dummy.xml   Cause : The /tmp is 100% full.   Fix: Either remove the old files in /tmp  directory  OR  export TEMP=/new/location where there is plenty of free space.

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• How to find out details about hardware on the Linux machine?

  - by Evgeny

  -i.e - how to get a full list of hardware components in command line (on a machine with no window system) Thank you.

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• Scriptable FTPS client able to send Keep Alive to control port?

  - by schultkl

  We need a FTP client that satisfies the following constraints: Windows Command-line scriptable, so we can automate it...sorry, FileZilla (?) FTPS, as it seems to perform better than SFTP The ability to send KeepAlive commands to the FTPS control port No passwords sent on the command line...sorry, curl Number 4, above, is critical: we have set KeepAlive in some other clients (e.g., CoreFTP LE) but we seem to have some routing equipment in the server environment which drops our connection when transferring a 7GB+ file. We have also set passive mode and "resume transfer" functionality seems currently broken with this secure file transport server...so we need to download the file in one go. What FTPS clients might meet our needs?

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• Oracle University New Courses (Week 35)

  - by swalker

  Oracle University released the following new (versions of) courses recently: Fusion Middleware Oracle Directory Services 11g: Administration (5 days) Oracle SOA Suite 11g: Essential Concepts (Training on Demand) e-Business Suite R12 Oracle HRMS iRecruitment Fundamentals (Self-Study Course) R12 Oracle Payroll Fundamentals: Administration (Self-Study Course) R12 Oracle HRMS System Administration Fundamentals (Self-Study Course) R12 Oracle HRMS Self Service Fundamentals (Self-Study Course) R12 Oracle HRMS Implement and Use Fast Formula (Self-Study Course) R12 HRMS Work Structures Fundamentals (Self-Study Course) R12 HRMS Total Compensation Foundations (Self-Study Course) Siebel Siebel 8.1.x Chat and Voice Integration Using CCA (Self-Study Course) Siebel 8.1.x Search using Oracle Secure Enterprise Search (Self-Study Course) Siebel 8.1.x COM Web Services (Self-Study Course) Siebel 8.1.x COM Asset Based Order Management (Self-Study Course) Siebel 8.1.x COM: What is New in Product Configurator (Self-Study Course) Siebel 8.1.x COM Product Configurator Caching & Performance Management (Self-Study Course) Siebel 8.1.x COM PSP Engine Caching and Performance Management (Self-Study Course) Siebel 8.1.x Remote: Administration (Self-Study Course) Siebel 8.1.x Remote: Technical Foundations (Self-Study Course) Siebel Tools: Configuring Chart and Tree Applets (Self-Study Course) Sun - Server Administration SPARC SuperCluster Administration and Maintenance Seminar (2 days) OPN Only Sparc T4-Based Servers Installation Boot Camp (1 day) Primavera Primavera P6 Application Administration Rel 8.x (2 days) Oracle Retail Retail Merchandising System (RMS) Business Overview (Self-Study Course) Retail Invoice Matching (ReIM) Product Overview (Self-Study Course) Retail Invoice Matching (ReIM) Business Introduction (Self-Study Course) Retail Demand Forecasting: RDF Classic Product Overview (Self-Study Course) Retail Demand Forecasting Introduction (Self-Study Course) Retail Data Warehouse (RDW) Overview 13.1 (Self-Study Course) Oracle Retail Point-of-Service (POS) Product Overview (Self-Study Course) Retail Sales Audit (ReSA) Product Overview (Self-Study Course) Retail Price Management (RPM) Product Overview (Self-Study Course) Retail Merchandising System (RMS) Technical Introduction (Self-Study Course) Oracle Retail Integration Bus (RIB) Product Overview (Self-Study Course) Oracle Communiucations Unified Communications Suite Convergence Customization (2 days) OSM Foundations I: Tasks, Processes and Orders Get in contact with your local Oracle University team for more details and course dates. Stay Connected to Oracle University: LinkedIn OracleMix Twitter Facebook Google+

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• How do you change your Airport or Ethernet MAC address in Mac OS X 10.6?

  - by Dave Gallagher

  I have a MacBook Pro and would like to set a custom MAC address for either my Airport WiFi card, or Ethernet port. In older versions of Mac OS X, you could do it like this: $ sudo ifconfig en0 ether 00:11:22:33:44:55 // Ethernet $ sudo ifconfig en1 lladdr AA:BB:CC:DD:EE:FF // Airport For it to work on Airport, you'd have to power it on (e.g. $ sudo ifconfig en1 up), ensure it's not connected to any wireless network, and execute the command. I'm aware such a change won't propagate across reboots. Unfortunately, this doesn't work on Mac OS X 10.6.6 anymore. Apple appears to have removed the functionality (the command fails silently). Does anyone have any idea how to do it? Thanks for any help you can offer! :)

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• Git Daemon on linux?

  - by bwawok

  Trying to set up a simple git-daemon on a linux server, and talk to it from a windows box. On linux server: Make a folder /home/foo/bar CD to /home/foo/bar do a git --bare init here Do a touch git-daemon-export-ok CD to /home/foo Run the command git-daemon --verbose --reuseaddr --base-path=/home/foo --enable=receive-pack On Windows Client w tortoise Git Do git.exe clone --progress -v "git://servername/bar" "C:\source\myFolderName" (works) Create file a.txt, add it to git, and commit (works) Do a git.exe pull "origin" master and then get fatal: Couldn't find remote ref master (makes sense, master isn't there yet) Do a git.exe push "origin" master:master and tortoise hangs forever without do anything I realize why I can't pull from master yet on the remote branch.. but why can't I push my first commit into the remote repo? #4 really should work. Tried it both with tortoise and the mysysgit command line, both cases I hang forever. What am I missing? Server has no useful log

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• Git Daemon on linux?

  - by bwawok

  Trying to set up a simple git-daemon on a linux server, and talk to it from a windows box. On linux server: Make a folder /home/foo/bar CD to /home/foo/bar do a git --bare init here Do a touch git-daemon-export-ok CD to /home/foo Run the command git-daemon --verbose --reuseaddr --base-path=/home/foo --enable=receive-pack On Windows Client w tortoise Git Do git.exe clone --progress -v "git://servername/bar" "C:\source\myFolderName" (works) Create file a.txt, add it to git, and commit (works) Do a git.exe pull "origin" master and then get fatal: Couldn't find remote ref master (makes sense, master isn't there yet) Do a git.exe push "origin" master:master and tortoise hangs forever without do anything I realize why I can't pull from master yet on the remote branch.. but why can't I push my first commit into the remote repo? #4 really should work. Tried it both with tortoise and the mysysgit command line, both cases I hang forever. What am I missing? Server has no useful log

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