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• What is blocking incoming packets to port 67?

  - by Peter Robertson

  I have a DSP connected to a Windows 7 laptop by Ethernet. The laptop has all firewalls disabled (I've even tried stopping the Windows firewall service and DHCP). The DSP is sending well-formed BOOTP broadcast packets every 3 seconds to port 67. Wireshark running on the laptop sees these BOOTP packets coming in. I have a program running on the laptop with a socket successfully bound to port 67. I can see this using CurrPorts.exe. Nothing else is shown as accessing port 67. The program never sees any packets coming in. If I run a program in the DSP that sends ordinary UDP packets to port 67, Wireshark sees them coming in and reports that they are corrupt BOOTP packets, but now, my program gets them. Any idea what's going on here?

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• Group policy issues

  - by Alex Berry

  We are having an issue on one of our clients relatively new sbs installs. The domain consists of a single SBS 2011 server with 4 windows 7 clients and 3 xp clients. Most of the time everything is fine however roughly every 3 days windows 7 clients start timing out when trying to receive computer group policy. This results in hour long delays before getting to the login screen in the morning. This is accompanied by event ID 6006, win login errors stating it took 3599 seconds to process policy. Once they've booted they can log in without issue however gpupdate fails again on computer policy and gpresult comes back with access denied, even when run as domain admin... At this point if we restart the server the network is fine for 3 days. I thought perhaps it might be ipv6 or smb2, but disabling ipv6 on the clients doesn't help and the clients can browse the sysvol folder freely on smb2 anyway. Does anyone have any ideas or routes I can take to further diagnose the issue? Thanks in advance :)

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• Packet loss with all adapters on one PC only on the LAN

  - by Enigmativity

  I have a Windows 7 64-bit machine that is losing up to 20% of IP packets on both adapters - wireless & LAN. Browser traffic appears to be affected the most, but it is happening to all protocols. All other computers on the network are functioning fine. If I ping from my faulty machine to any machine on the LAN (wired or wirelessly), including the router/gateway and internet sites, I get up to 20% packet loss. If I do the following commands: ipconfig /release ipconfig /renew then I sometimes get my network performance back for a matter of a few seconds to less than a couple of minutes. Rebooting also works for a short period of time. This problem has been occurring for a couple of months and is getting worse. The computer used to work just fine. I updated the wireless adapter firmware the other day with no effect. Does anyone know what is happening?

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• How to force-restart a PC with vPro technology?

  - by Dan Nissenbaum

  I would like to know how to force-restart a PC that has crashed/hung and become completely non-responsive, using 2nd-generation vPro technology. Assume there is a second, fully responsive PC on the same LAN that can be accessed remotely to assist. Specifically, I am considering purchasing a PC with an i7-2860QM CPU, which is vPro-enabled (according to Intel). Here are two links that indicate it should be possible to force-restart a hung system with a 2nd-generation vPro-enabled CPU: Seconds 24-39 of What Is Intel vPro™ Technology? Page 17 (21 of the PDF) of Intel® vPro™ Technology: Reference Guide However, after extensive research, I cannot find a straightforward and trustworthy source of confirmation that this will actually work as I describe, or any documentation about how to set it up. I would appreciate both a reliable confirmation, and a source of documentation. This question is a follow-up to: Wake-on-LAN (WOL) fails after computer crashes (Windows 7 64-bit).

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• help setting up an IPSEC vpn from my linux box

  - by robthewolf

  I have an office with a router and a remote server (Linux - Ubuntu 10.10). Both locations need to connect to a data supplier through a VPN. The VPN is an IPSEC gateway. I was able to configure my Linksys rv42 router to create a VPN connection successfully and now I need to do the same for Linux server. I have been messing around with this for too long. First I tried OpenVPN, but that is SSL and not IPSEC. Then I tried Shrew. I think I have the settings correct but I haven't been able to create the connection. It maybe that I have to use something else like a direct IPSEC config or something like that. If someone knows of a way to turn the following settings that I have been given below into a working IPSEC VPN connection I would be very grateful. Here are the settings I was given that must be used to connect to my supplier: Local destination network: 192.168.4.0/24 Local destination hosts: 192.168.4.100 Remote destination network: 192.167.40.0/24 Remote destination hosts: 192.168.40.27 VPN peering point: xxx.xxx.xxx.xxx Then they have given me the following details: IPSEC/ISAKMP Phase 1 Parameters: Authentication method: pre shared secret Diffie Hellman group: group 2 Encryption Algorithm: 3DES Lifetime in seconds:28800 Phase 2 parameters: IPSEC security: ESP Encryption algortims: 3DES Authentication algorithms: MD5 lifetime in seconds: 28800 pfs: disabled Here are the settings from my attempt to use shrew: n:version:2 n:network-ike-port:500 n:network-mtu-size:1380 n:client-addr-auto:0 n:network-frag-size:540 n:network-dpd-enable:1 n:network-notify-enable:1 n:client-banner-enable:1 n:client-dns-used:1 b:auth-mutual-psk:YjJzN2QzdDhyN2EyZDNpNG42ZzQ= n:phase1-dhgroup:2 n:phase1-keylen:0 n:phase1-life-secs:28800 n:phase1-life-kbytes:0 n:vendor-chkpt-enable:0 n:phase2-keylen:0 n:phase2-pfsgroup:-1 n:phase2-life-secs:28800 n:phase2-life-kbytes:0 n:policy-nailed:0 n:policy-list-auto:1 n:client-dns-auto:1 n:network-natt-port:4500 n:network-natt-rate:15 s:client-dns-addr:0.0.0.0 s:client-dns-suffix: s:network-host:xxx.xxx.xxx.xxx s:client-auto-mode:pull s:client-iface:virtual s:client-ip-addr:192.168.4.0 s:client-ip-mask:255.255.255.0 s:network-natt-mode:enable s:network-frag-mode:disable s:auth-method:mutual-psk s:ident-client-type:address s:ident-client-data:192.168.4.0 s:ident-server-type:address s:ident-server-data:192.168.40.0 s:phase1-exchange:aggressive s:phase1-cipher:3des s:phase1-hash:md5 s:phase2-transform:3des s:phase2-hmac:md5 s:ipcomp-transform:disabled Finally here is the debug output from the shrew log: 10/12/22 17:22:18 ii : ipc client process thread begin ... 10/12/22 17:22:18 < A : peer config add message 10/12/22 17:22:18 DB : peer added ( obj count = 1 ) 10/12/22 17:22:18 ii : local address 217.xxx.xxx.xxx selected for peer 10/12/22 17:22:18 DB : tunnel added ( obj count = 1 ) 10/12/22 17:22:18 < A : proposal config message 10/12/22 17:22:18 < A : proposal config message 10/12/22 17:22:18 < A : client config message 10/12/22 17:22:18 < A : local id '192.168.4.0' message 10/12/22 17:22:18 < A : remote id '192.168.40.0' message 10/12/22 17:22:18 < A : preshared key message 10/12/22 17:22:18 < A : peer tunnel enable message 10/12/22 17:22:18 DB : new phase1 ( ISAKMP initiator ) 10/12/22 17:22:18 DB : exchange type is aggressive 10/12/22 17:22:18 DB : 217.xxx.xxx.xxx:500 <- 206.xxx.xxx.xxx:500 10/12/22 17:22:18 DB : c1a8b31ac860995d:0000000000000000 10/12/22 17:22:18 DB : phase1 added ( obj count = 1 ) 10/12/22 17:22:18 : security association payload 10/12/22 17:22:18 : - proposal #1 payload 10/12/22 17:22:18 : -- transform #1 payload 10/12/22 17:22:18 : key exchange payload 10/12/22 17:22:18 : nonce payload 10/12/22 17:22:18 : identification payload 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports nat-t ( draft v00 ) 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports nat-t ( draft v01 ) 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports nat-t ( draft v02 ) 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports nat-t ( draft v03 ) 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports nat-t ( rfc ) 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local supports DPDv1 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local is SHREW SOFT compatible 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local is NETSCREEN compatible 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local is SIDEWINDER compatible 10/12/22 17:22:18 : vendor id payload 10/12/22 17:22:18 ii : local is CISCO UNITY compatible 10/12/22 17:22:18 = : cookies c1a8b31ac860995d:0000000000000000 10/12/22 17:22:18 = : message 00000000 10/12/22 17:22:18 - : send IKE packet 217.xxx.xxx.xxx:500 - 206.xxx.xxx.xxx:500 ( 484 bytes ) 10/12/22 17:22:18 DB : phase1 resend event scheduled ( ref count = 2 ) 10/12/22 17:22:18 ii : opened tap device tap0 10/12/22 17:22:28 - : resend 1 phase1 packet(s) 217.xxx.xxx.xxx:500 - 206.xxx.xxx.xxx:500 10/12/22 17:22:38 - : resend 1 phase1 packet(s) 217.xxx.xxx.xxx:500 - 206.xxx.xxx.xxx:500 10/12/22 17:22:48 - : resend 1 phase1 packet(s) 217.xxx.xxx.xxx:500 - 206.xxx.xxx.xxx:500 10/12/22 17:22:58 ii : resend limit exceeded for phase1 exchange 10/12/22 17:22:58 ii : phase1 removal before expire time 10/12/22 17:22:58 DB : phase1 deleted ( obj count = 0 ) 10/12/22 17:22:58 ii : closed tap device tap0 10/12/22 17:22:58 DB : tunnel stats event canceled ( ref count = 1 ) 10/12/22 17:22:58 DB : removing tunnel config references 10/12/22 17:22:58 DB : removing tunnel phase2 references 10/12/22 17:22:58 DB : removing tunnel phase1 references 10/12/22 17:22:58 DB : tunnel deleted ( obj count = 0 ) 10/12/22 17:22:58 DB : removing all peer tunnel refrences 10/12/22 17:22:58 DB : peer deleted ( obj count = 0 ) 10/12/22 17:22:58 ii : ipc client process thread exit ...

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• Running a defect php file cause error 500

  - by John Brunner

  When I address a PHP file, I always get an error 500. I've looked up the logs of my Apache server, and this displays that some includes etc. in the PHP file address files which don't exist on the server. They don't exist because I'm just testing my PHP file. But could it be achieved that the server runs the php file in every case, even when something is wrong? Every 30 seconds an entry is made in the error_log file which says [Sat Jun 09 17:55:07 2012] [error] [client 10.224.55.160] File does not exist: /var/www/html/index.html ... but there IS an index.html?!

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• Windows Explorer Jumplist delay

  - by Jeremy B.

  I've begun to have an issue with the Jump list for Windows Explorer (Windows 7). What happens is that when i gesture click, or right click on the explorer icon the first time after rebooting the initial menu (Windows Explorer, Unpin) and the Jump List with my pinned folders and frequent folders works fine. Any subsequent attempt will open the initial menu, but the jump list will experience a long delay (10-20 seconds) before the pinned and frequent folders will pop up. Initially my frequent folders would grab a networked drive which I thought might be the cause. I have removed that from the list and there is still no change. I really enjoy being able to quickly hit directories i use often and this is quite frustrating. Any help would be extremely appreciated.

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• Micro sound breaks/interrupts on Windows 7

  - by cand

  Hello all, I've been experiencing strange behavior recently. When listening to mp3 or watching movie or whatever that uses sound, I get micro breaks in sound. It's like it hangs or cuts a fragment for about 0.5s. When I start OS, it's ok, but as time passes it gets worse, to the extent that music is unlistenable being interrupted every 2 seconds. I haven't found any relevance between this behavior and hardware usage, I don't think it's directly related to HDD (or it might be but with significant delay). I have updated soundcard drivers and it didn't help a lot. My system is Windows 7, computer is simple HP laptop, nx7300-Ru374ES with WD Caviar Scorpio Blue hard drive inside and integrated soundcard on it (I can check the model later if it's important). Did anybody encounter such problem ? Maybe it's a common thing on Windows 7 or someone knows how to solve it? Thanks in advance.

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• How to redirect (or Alias) jump page with Apache

  - by Meltemi

  I'm not an Apache expert but need to make a small change to a web server. We are introducing a "jump page" URL that is different from a primary URL (for tracking reasons). /productA/index.html /productA/jump_index.html Basically i want to log that jump_index.html was requested and then return index.html. I don't want the client to wait 8 seconds or so for a redirect. How should we be handling this? Simply symlink (or alias) the file in the filesystem? Use mod_alias Alias Match (if so how exactly)? something better still? Edit: mod_rewrite in httpd.conf: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_METHOD} ^TRACE RewriteRule .* - [F] </IfModule>

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• How can I make an actual compact cassette "tape" mix-tape from iTunes?

  - by MikeN

  I want to make an actual compact cassette mix-tape as a gift for someone. I use iTunes to manage all of my music. So a few questions: If I gather a bunch of songs on a playlist for sides A/B of the tape, how can I ensure that the volume for all songs is the same as it plays on the tape? I was thinking of finding an old compact casette recorder and putting the single line sterio output of my Mac to the casette's microphone input. Is that a good way to record onto the actual tape? How long is each side of a compact tape? Is there a default speed the tape plays at? Let's say I want to mesh some songs together so that they will completely fill up one side of a tape (cut off 10 seconds off the end of one song or the beginning of another song), what's the best way to do that?

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• How to set CHKDSK for drive C: in Windows 7

  - by prashanth

  I recently got a 0xc000007b error whenever I tried to run some application software. I found that CHKDSK for C drive might be a solution. When I tried to do it from C drive properties, it said the drive was in use and asked to schedule CHKDSK at the next reboot. I clicked OK. When I restart, I experience a BSOD. I waited for 10 minutes but still nothing happens. So I forced a shutdown (laptop) and again booted up the computer and got a BSOD for just 5 or 10 seconds and system boots and works with no problem. I repeated all these steps four or four times and yet with the same results. Is there any other way other than CHKDSK to solve the 0xc000007b error? If not, why is CHKDSK not working at boot up? Can I force CHKDSK on drive C: to perform while the system is on? Platform: Windows 7 64-bit.

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• Picasa v.3.6.2 for Mac is suddenly very slow - what are the implications of rebuilding my database?

  - by 3rdparty

  Recently Picasa v3.6.2 for Mac has become very sluggish - mainly noticable for any (non destructive) changes made to photos such as starring an image. This action used to be nearly immediate, but recently I've found it can take 1-3 seconds for Picasa to register the change, and become responsive again. I'm considering rebuilding my Picasa database as per these instructions - however I'm concerned I may lose any pre-existing non-destructive (unsaved) edits, along with Picasa albums that I have created. Curious if anyone has experienced Picasa sluggishness with the latest version and/or what their results have been from rebuilding their database. My last resort is to SuperDuper my drive and then rebuild the database, so I can always restore it if I lose critical data.

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• PuTTY/SSH: How to Prevent Auto-Logout?

  - by feklee

  My ISP's SSH server (Debian 2.0) logs me out after 35 minutes of inactivity, when connected with PuTTY (Windows XP). This is a big problem when I utilize the server for port-forwarding. The final messages displayed in the terminal: This terminal has been idle 30 minutes. If it remains idle for 5 more minutes it will be logged out by the system. Logged out by the system. PuTTY options that do not help: Sending of null packets to keep session active. Seconds between keepalives (0 to turn off): 30 [x] Enable TCP keepalives (SO_KEEPALIVE option) Any idea how to avoid the auto-log-out? Should I try another SSH client?

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• Computer randomly shuts down with a fading alarm power button and CD drive

  - by Shad

  I am currently experiencing something very very odd. Having build my PC myself, I have never had any issues (or anything heat related). A few moments ago my computer shut down very randomly and everything goes blank, when I looked down on my case's power button it was fading on and off in such way I've had never seen before. I noticed the CD drive all of a sudden also started blinking randomly. What do you guys think this problem is related to? It is definitely not a overheating issue and I am pretty sure my 600 watt power supply didn't blow because right now I am able to turn it on and boot up the PC but 20 seconds later it shuts down (sometimes doesn't shut down for 2 minutes). I have no idea what this is... My specs are (built by myself): i5 3570k (unoverclocked) GTX 560ti Asrock Z77 Pro4-M motherboard 8GB Vengeance RAM 600W Corsair power supply 500GB of Seagate HD Case: Corsair Carbide 300R

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• Dell Inspiron/Windows Vista sleep/hibernate issue

  - by sarge

  When I hit the sleep button in Windows the computer looks like it's going into Sleep mode but a few seconds later it's restarted, and stops with this error message: internal hard disk drive not found To resolve this issue, try to reseat the drive. No bootable devices--strike F1 to retry boot, F2 for setup utility Press F5 to run onboard diagnostics. The computer is running Windows Vista (SP2) and I have installed all available Windows Updates and the latest manufacturer drivers. I have already tried to reseated the drive, ran the onboard diagnostics and there were no errors. I have changed the power settings for all devices where it's available so that they are not allowed to wake up the computer. Any ideas?

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• Recursively resize images from one directory tree to another?

  - by davr

  I have a large complex directory tree full of JPG images. I would like to create a second directory tree that exactly mirrors the first, but resizing all the images down to a set size (say 2000x1500 or something) and quality (perhaps 85%). Is there any tool that would allow me to easily do this on Windows? I could write some scripts to automate it with bash and image magick, but first want to see if it's already been done. Faster is better too, as I have thousands of images. So something like Photoshop is probably not a good solution as it might take a couple of seconds per image.

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• Audio services in windows 7

  - by infant programmer 'Aravind'

  In an attempt of blocking a viral service on my system (which was restarting my system automatically for every 30 seconds), I disabled all the services, and later enabled trustworthy services only. (note: Hide all microsoft services didn't work blocking the auto restart so I disabled all services) Now I have been succeeded in blocking automatic restart and I am able to access internet and all other necessary stuffs. Well, however system audio is mute(definitely because a necessary service is not running). Now I need a list of services that need to be started (set automatic) on windows 7.

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• Secondary Monitor won't Display at Full Resolution with Primary Display Disconnected

  - by Laramie

  I have had a bad day. Among today's events, the LCD display on my Dell E6500 notebook failed. It had been working with a secondary monitor connected through a VGA cable at 1600x900 resolution until I removed the LCD from my notebook for repair. Now the max resolution available on the secondary display is 1024x768. If I reconnect the burned out primary display, the secondary monitor is again available at 1600x900. The video card is an onboard Mobil Intel 4. How can I maintain the secondary display at 1600x900 with the primary display disconnected (for repair)? Edit: I just noticed that when Windows boots, it displays at the correct resolution and I can see my desktop in all its glory for a couple seconds then reverts to 1024x768.

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• ASP.NET website http requests appear to be queueing

  - by scolemann

  We cloned our servers this weekend into a colo. All non-asp.net sites are performing great, but ASP.NET sites are very slow. It appears to be an issue with the requests/connections, but I cannot figure out where. The reason I think it is a problem with the connections is that when I launch fiddler and watch the requests, all requests appear to happen sequentially. Even the static image requests are taking 5 seconds and another one doesn't start until the first one finishes. MaxConnections is set to 100 in machine.config and the "website connections" are set to unlimited. Any idea what else coudld be causing this? from machine.config:

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• Windows 7 Locking up Randomly

  - by Michael Moore

  I've got a Windows 7 machine that is locking up randomly. It can be in the first thirty seconds, or it can be hours later. There is nothing specific I can find that is running when it happens. When it locks, the screen doesn't change, but nothing moves. The waiting icon stops, the mouse stops, keyboard doesn't work, etc. I've even tried the crash on ctrl-scrl registry hack, and it won't even dump the kernel. I've run hardware diagnostics on the RAM and it doesn't find any problems. I would think it is a hardware issue, but on this exact same machine, I can run 64 Bit Ubuntu and it has zero problems. I've even tried reinstalling Windows7 from scratch, and it still happens. Anyone have any ideas? Any good diagnostic tools to recommend? Thanks! Michael

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• WiFi: Connect to a network with hidden SSID in Windows 7

  - by Dor

  I have Windows 7 with the following station: D-Link DWA-160 Xtreme N Dual Band USB Adapter(rev.A2) (driver version 3.5.0.21). I'm trying to connect to a wireless network that has an hidden SSID with the command: Netsh wlan connect name="myNetworkProfile" The profile is configured to connect even if the network is not broadcasting its name (SSID). Despite that, the command fails promptly every time with the message: The network specified by profile "myNetworkProfile" is not available to connect. Nonetheless, when trying to connect manually using the dialog box (see image below), it successfully connects to the network after about 10 or 15 seconds. Also, Please - no need to elaborate about how useless the hidden SSID feature is.

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• 4 - 7 second delay accessing Mysql across the network

  - by Kristiaan

  Hello, our company has recently purchased a new server with the intention of replacing our aging database server. its a full 64bit 2008 enterprise system, i have got the basic server setup and configured and then installed the 64bit version of mysql on the server, this has then been configured to match where possible our existing server as much as it can. however i have noticed that when it was swapped with the production database server our software systems had an increased delay accessing the mysql database this was anything beween 4 - 7 seconds. i have tried disabling TOE, IPv6 and a few other suggested soultions to this but so far cannot find out where this slowdown is coming from. replacing the server with the production one and the delay goes away. in terms of software and hardware the servers are not very identical at all due to one being windows 2003 std with a 32bit server and the new one being windows 2008 enterprise with a 64bit server. thanks Kris

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• Give root password for maintenance

  - by Jevgeni Smirnov

  After entering shutdown now in terminal I get everything running normally and then: All processes ended withing 2 seconds...done INIT: Going single user INIT: Sending processes the TERM signal INIT: Sending processes the KILL signal Give root password for maintenance(or.... I press Ctrl+D, and it shows me login screen Debian. Shutdown through GUI works properly. UPDATE 1 It seems some process hangs. Moreover I'v managed to poweroff server through several retries. Recently i'v installed only ntp and ntpdate. Nothing more. I suppose it might be it conflicting with iptables.

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• trap "" HUP v.s Nohup ? How can I run a portion of shell script in nohub mode?

  - by Alex

  I want to run a shell script over the weekend, but I wanna make sure if the terminal loses the connection, my script won't be terminated. I use nohup for the whole script invokation, but I also want to execute some portion of my shell script in a way that if someone closes my terminal, my script runs on the background still. Here is a simple example : #!/bin/bash echo "Start the trap" trap " " HUP echo "Sleeping for 60 Seconds" sleep 60 echo "I just woke up!" Please suggest what I should do ? The trap " " HUP seems like not working when I close my terminal tab.

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• sox mix nested scripts on amazon ec2 rhel linux

  - by Ray

  I'm trying to use "sox" to mix some audio files. The command works great on my Mac terminal sox -m audio.wav "| sox upload.wav -p trim 2 1 pad 6" final.wav This mixes (not concatenate) audio.wav and a section of upload.wav from the 2nd second to the 3rd second and adds 6 seconds of padding in the front, and outputs to final.wav Now the problem is, the SAME EXACT command does NOT work my Amazon EC2 RHEL box. (sox is installed correctly). I get the following error sox soxio: Can't open input file `| sox upload.wav -p trim 2 2 pad 6': No such file or directory For some reason RedHat doesn't like the double quotes. Even though it is documented to be used this way. Thanks for your help!

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