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  • OS X Terminal ends session at opening : permission denied

    - by Jon
    I have an issue with Terminal on MacOS X 10.7.4. I know where it comes from, but I don't know how to solve it : Yesterday, I installed fish-shell as a shell replacement. Following the installation instructions, I ended typing the following command : chsh -s /usr/local/bin/fish I noticed I had to do a : sudo bash for it to work. Once done, I quit. Today, I try to run Terminal and I see te following message : Last login: Wed Jun 27 12:38:01 on ttys000 login: /usr/local/bin/fish: Permission denied [Opération terminée] (yes, I'm French, which explains my poor English). I cannot type any command since I have no access to the Terminal. I tried with iTerm2 but same issue. No command is set at launch in the default profile of Terminal/iTerm2 (well, in the UI). How can I take the power back ? Thank you.

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  • Create Your Own Quick Calculator Function for the Terminal

    - by The Geek
    If you’re anything like me, you’ve always got a Terminal window open, and you probably have even assigned a hotkey to bring it up anytime. So why open up the boring calculator when you can solve equations right there on the command line? This is a simple method for creating a calculator using the built-in function support in the Bash shell. Essentially all we’re doing is assigning the question mark to run the bc command with whatever arguments you type after it. Latest Features How-To Geek ETC RGB? CMYK? Alpha? What Are Image Channels and What Do They Mean? How to Recover that Photo, Picture or File You Deleted Accidentally How To Colorize Black and White Vintage Photographs in Photoshop How To Get SSH Command-Line Access to Windows 7 Using Cygwin The How-To Geek Video Guide to Using Windows 7 Speech Recognition How To Create Your Own Custom ASCII Art from Any Image Vintage Posters Showcase the History of Tech Advertising Google Cloud Print Extension Lets You Print Doc/PDF/Txt Files from Web Sites Hack a $10 Flashlight into an Ultra-bright Premium One Firefox Personas Arrive on Firefox Mobile Focus Booster Is a Sleek and Free Productivity Timer What is the Internet? From the Today Show January 1994 [Historical Video]

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  • UML Linux - vmlinux.o Error 1 - final close failed: Input/output error

    - by Zach
    I'm trying to install UML linux. Kernel is 2.6.28. I link to Linux files so that I have a read-only copy that I can revert back to. I then run the commands: make defconfig ARCH=um # works make ARCH=um # errors out at the very end: final close failed: Input/output error make: *** [vmlinux.o] Error 1 Because of this error, my binary vmlinux never gets created so I can't run my own UML Linux. Any ideas?

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  • error with "pmem.c" compiling linux source code for android

    - by Preetam
    I am compiling linux source code for android emulator. When i execute make command(for building and cross-compiling the linux source) i get the following error "pmem.c" file. root@ubuntu:~/common# make CHK include/linux/version.h CHK include/linux/utsrelease.h SYMLINK include/asm - include/asm-x86 CALL scripts/checksyscalls.sh CHK include/linux/compile.h CC drivers/misc/pmem.o drivers/misc/pmem.c:441: error: conflicting types for ‘phys_mem_access_prot’ /home/preetam/common/arch/x86/include/asm/pgtable.h:383: note: previous declaration of ‘phys_mem_access_prot’ was here drivers/misc/pmem.c: In function ‘flush_pmem_file’: drivers/misc/pmem.c:805: error: implicit declaration of function ‘dmac_flush_range’ drivers/misc/pmem.c: In function ‘pmem_setup’: drivers/misc/pmem.c:1265: error: implicit declaration of function ‘ioremap_cached’ drivers/misc/pmem.c:1266: warning: assignment makes pointer from integer without a cast make[2]: * [drivers/misc/pmem.o] Error 1 make[1]: [drivers/misc] Error 2 make: ** [drivers] Error 2 root@ubuntu:~/common# how to resolve this error. It seems that there may some problems in the "pmem.c" file and i'll have to choose different git repository. but that would be a very complex thing, as now i have already done most of the things till here. I might have to see correct version of this file. please someone tell what should i do? how to solve this errors. please help..thankyou!

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  • Linux System Programming

    - by AJ
    I wanted to get into systems programming for linux and wanted to know how to approach that and where to begin. I come from a web development background (Python, PHP) but I also know some C and C++. Essentially, I would like to know: Which language(s) to learn and pursue (I think mainly C and C++)? How/Where to learn those languages specific to Systems Programming? Books, websites, blogs, tutorials etc. Any other good places where I can start this from basics? Any good libraries to begin with? What environment setup (or approx.) do I need? Assuming linux has to be there but I have a linux box which I rarely log into using GUI (always use SSH). Is GUI a lot more helpful or VI editor is enough? (Please let me know if this part of the question should go to serverfault.com) PS: Just to clarify, by systems programming I mean things like writing device drivers, System tools, write native applications which are not present on Linux platform but are on others, play with linux kernel etc.

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  • Linux memory fragmentation

    - by Raghu
    Hi all, Is there a way to detect memory fragmentation on linux ? This is because on some long running servers I have noticed performance degradation and only after I restart process I see better performance. I noticed it more when using linux huge page support -- are huge pages in linux more prone to fragmentation ? I have looked at /proc/buddyinfo in particular. I want to know whether there are any better ways to look at it.

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  • HTG Explains: Why You Shouldn’t Log Into Your Linux System As Root

    - by Chris Hoffman
    On Linux, the Root user is equivalent to the Administrator user on Windows. However, while Windows has long had a culture of average users logging in as Administrator, you shouldn’t log in as root on Linux. Microsoft tried to improve Windows security practices with UAC – you shouldn’t log in as root on Linux for the same reason you shouldn’t disable UAC on Windows. How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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  • Oracle Linux and Oracle VM Hardware Certification Program

    - by Durgam Vahia
    The Oracle Linux and Oracle VM are continuing to see growth in IHV (Independent Hardware Vendor) ecosystem. The Oracle Linux and Oracle VM Hardware Certification Program, also referred as HCL, provides a formal means for hardware vendors to work with Oracle to establish high quality support for the certified hardware platform. Since the beginning of the program, number of hardware partners have certified range of server platforms on Oracle Linux and Oracle VM. Currently, HCL lists over 400 certifications from 10 server vendors and the list continues to grow at a rapid pace. New hardware certification involves close collaboration between Oracle and server partner to ensure that adequate testing is performed on the target server and results are thoroughly reviewed. This rigorous process ensures that when new hardware platform is listed on HCL, it has full support from both Oracle and the respective partner. Additionally, once a certification is achieved with Oracle Linux with the current version of Unbreakable Enterprise Kernel, future minor updates of the software continue to carry over the certification, reducing the need for a re-certification. For the complete list of certified hardware, please visit Oracle Linux and Oracle VM Certified Hardware. Also refer to Frequently Asked Questions for more information.

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  • Wozu eigentlich Oracle Linux?

    - by Manuel Hossfeld
    Zur Abwechslung gibt es heute mal einen kürzeren Artikel, und zwar zum Thema "Oracle Linux". Der eine oder andere mag sich vielleicht schon mal gefragt haben, warum man sich mit diesem "Red Hat Klon" überhaupt auseinandersetzen sollte. Gibt es neben dem "Support aus einer Hand"-Argument noch andere Gründe, warum sich Kunden dafür entscheiden, Oracle Linux einzusetzen? Diese und ähnliche Fragen hat eine kürzlich erschienene IDC-Studie beleuchtet. Sie trägt den Titel: "Oracle Linux Takes Its Place in the Operating Systems Market". Interessant ist vor allem ein konkretes Kundenbeispiel am Ende der Studie. Da es thematisch gerade passt sei zum Schluss noch ein kleiner Hinweis in eigener Sache erlaubt:Viele der in dem Paper erwähnten Aspekte und Features (wie z.B. KSplice für Reboot-freie Kernel-Updates) werden auch auf der diesjährigen DOAG-Konferenz in Nürnberg behandelt. Mein Kollege Lenz Grimmer und ich halten dort einen Vortrag mit dem Titel: "Oracle Linux - Best Practices und Nutzen (nicht nur) für die Oracle DB"20.11.2012, 15:00 - 15:45 Uhr, Raum Kiew

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  • How to Install a Wireless Card in Linux Using Windows Drivers

    - by Justin Garrison
    Linux has come a long way with hardware support, but if you have a wireless card that still does not have native Linux drivers you might be able to get the card working with a Windows driver and ndiswrapper. Using a Windows driver inside of Linux may also give you faster transfer rates or better encryption support depending on your wireless card. If your wireless card is working, it is not recommended to install the Windows driver just for fun because it could cause a conflict with the native Linux driver Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Smart Taskbar Is a Thumb Friendly Android Task Launcher Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar

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  • 4 Alternatives to Google Drive for Linux

    - by Chris Hoffman
    We’ve covered using Google Drive on Linux with third-party software, but why bother jumping through those hoops? You can use a cloud storage service that officially supports Linux instead – several of Google Drive’s competitors do. Google may be leaving Linux users out, but other services like Dropbox, Ubuntu One, SpiderOak, and Wuala don’t ignore Linux users. They even offer more storage and other useful features, such as local encryption of your files. Our Geek Trivia App for Windows 8 is Now Available Everywhere How To Boot Your Android Phone or Tablet Into Safe Mode HTG Explains: Does Your Android Phone Need an Antivirus?

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  • How To Use Google Drive on Linux: 2 Unofficial Solutions

    - by Chris Hoffman
    When Google announced Google Drive, they promised Linux support. That was about 7 months ago. While Google said Google Drive for Linux was “still a priority” back in July, it seems it’s no longer a priority. If you want to use Google Drive on Linux, both Insync and grive can bring Google Drive to Linux. They’re not official, but they’re better than nothing if you’re waiting for an official client. How To Boot Your Android Phone or Tablet Into Safe Mode HTG Explains: Does Your Android Phone Need an Antivirus? How To Use USB Drives With the Nexus 7 and Other Android Devices

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  • How to add a custom shape in the beginning of terminal command-prompt?

    - by Naruto
    I have seen a lot of terminal with sweet shape in the beginning of terminal command-prompt, like this: and i want to add a shape like this : .....____________________ , ,__ ....../ `---___________----_____] - - - - - - - - ¦ ¦¦¦¦D ...../_==o;;;;;;;;_______.:/ .....), ---.(_(__) / ....// (..) ), ----" ...//___// ..//___// .//___// i know how to change text color and add a character at the end, but when i add the brev shape it give me an error when i open the terminal : so how to do this ?

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  • How do you recommend installing Linux on a computer that has no external drive or ability to boot fr

    - by 7777
    I have an old Toshiba Portege 3505 "ultralight" laptop, meaning it doesn't have any kind of disk drive on it at all, that I'd like to completely reformat and install Linux on. However, it won't boot from any drive (and I don't have any on hand), so I'll have to install it from a USB drive (which I doubt it boots from either). (I'm not sure how to change the settings in my BIOS to get my computer to boot from a USB stick. Any ideas for this?) How do you recommend I do this? I want to note that I don't want to run Linux off a LiveUSB, I want to actually install it on the machine. I was thinking about Damn Small Linux, it's tiny and all I need. Any advice or suggestions for something else though? Finally, I'm a total newbie to this, I've never installed Linux on anything before so I might be a little slow on some stuff! Thanks!

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  • How to create a readonly root linux: Can be mounted as writeable for persistent changes?

    - by Mr Anderson
    I'd like a read only file system that runs almost entirely in RAM but the compact flash or hardrive can be mounted and made writeable to make persistent changes. How do I do this on Linux? I've looked at several tutorials but none really explain how to create such a system with the option of being able to mount the storage device and make persistent changes. I looked at this so far: http://chschneider.eu/linux/thin_client/ I also looked on the old gentoo wiki but the article was very specific to Gentoo. I'll be using a debian based Linux but it would be nice I've someone could explain to me how to do this in pretty generic instructions ,that would work on any Linux distro. Thanks.

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  • An easily customizable linux distribution using minimal disk space?

    - by Frank
    I'm looking for a linux distribution that can be easily used to create my own distribution that's the same system with some software installed. So basically I should be able to create an iso which, when installed, will have the linux distribution with my desired installed. More specifically, I plan on installing mysql and a bit of my own software which shouldn't be too big. However, this distribution needs to be extremely small in terms of disk space. The distribution, including mysql should not exceed 100mb. It should, of course still be able to connect to the internet and perform other standard functions. I don't need X/any sort of window manager, and would prefer not to have it since it would increase disk usage. Currently I have tried ttylinux and tiny core linux. I've found that ttylinux, while is extremely small, has almost nothing so that mysql can't even be installed. Tiny core linux, on the other hand is a bit too big. I've found openembedded and linux from scratch, but I would prefer for the install and build process to be much easier. What other distribution would you recommend for my purposes? Minimizing disk usage is the most important, followed by ease of installing and creating the custom distribution.

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  • Where do you find the Bash source files of programs in Linux/Mac OSX?

    - by AndrewKS
    I am currently writing some convenience methods for my terminal in my bash_profile and am sure if what I am writing is "the best way". I figure a good way to verify whether what I'm doing is right or not would be to find some source code of more established programs and see how they do it. My question then is, where can I find this code on my Mac? An example is, with Macports installed, where is the source code that opens the port interactive console when I type nothing but "port" in my shell? (I added Linux in the title even though I am on a Mac because I assume the answer would be the same for both) Edit: The answer I am looking for is in terms of which directory relative to the programs will I find their unix scripts.

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  • is there a linux equivalent of iTerm(mac) sending command to multiple tabs functionality?

    - by jabbertalker
    in iTerm, you can send a command to execute simultaneously on a set of already opened tabs. Is there a way to do this in linux (with gnome-terminal preferably)? for instance, supposed that I had 10 tabs already ssh'd into [email protected] and sudoed to root and wanted to send a command to run on all 10 tabs. The goal of this is to be able to stay within a set of tabs and command them, rather than having to use expect scripts to ssh and elevate and run commands. Basically, like how you could do in iTerm.

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  • How do I get Ctrl-Backspace to delete a word in vim within gnome-terminal?

    - by Michael Gundlach
    I'd like Ctrl-Backspace to delete the current word in vim insert mode. From within xterm I can pull this off via :inoremap <C-H> <C-W> but in gnome-terminal I cannot figure out a way to make it happen. When in vim insert mode, if I type control-v and then press backspace, I get ^H in xterm, and ^? in gnome-terminal. Unfortunately, :inoremap <C-?> <C-W> doesn't do the trick in gnome-terminal; control-backspace just erases a single character no matter what. Regarding ASCII codes: Gnome-terminal lets you change the backspace character under Edit - Profile Preferences - Compatibility. Unfortunately, no option works, as far as I can tell: whatever character I apply to Backspace via the settings, if I try mapping the character itself, like :inoremap <C-H> <C-W> then regular backspace and control-backspace both erase an entire word; and if I try mapping control plus that character, like :inoremap <C-^H> <C-W> then regular backspace and control-backspace just erase a single character.

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  • Word 2007 crashes on Server 2008 R2 terminal services

    - by John Rennie
    We are finding that Word 2007 (with SP2) crashes when used on a Windows 2008 R2 terminal server. Typically it crashes when you click File/Open or File/Save, but not every time. Maybe one time in four, and just to be really confusing, on a test server in my office I can't make it crash. I have just today set up a brand new shiny 2k8 R2 terminal server with as simple a setup as possible, e.g. no anti-virus to confuse things, and we're still seeing crashes. My question is has anyone else seen this, and if so any clues on what's happening? We have a support case open with Microsoft, and the MS support engineer has conceded it's happening, but has so far been unable to find the reason. On possible factor is that all the 2k8 R2 terminal servers I've seen this on have been Hyper-V VMs (running on a 2k8 R2 host). I'm about to put in a physical 2k8 R2 terminal server at the customer where we're seeing the most crashes, in case this is relevant. More news soon. Sorry if this posting seems a bit vague, but this has just bitten us and is causing a lot of pain and sleepless nights :-( If anyone can help I'll be enormously grateful! Update: we've given up and gone back to 2008 pre-R2. Both Office 2003 and 2007 both work fine now. I think there are some problems with TS in R2. Googling doesn't find much, so I thought it was just me. It's reassuring to find that someone else has seen the same problem.

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  • Unknown user in terminal

    - by Giles B
    Im having a strange problem with the terminal in OS X. When I open the terminal the username at the command prompt is: unknown-04-0c-ce-e3-0d-c2: ~ I can't pinpoint when this first started or why unfortunately. I usually use iTerm for web development purposes but this also occurs in the normal OS X Terminal app. Any ideas/help would be really appreciated. Thanks Update: Thanks to @fayadfami and @aliasgar for the correct answers and steering me in the right direction. Also this forum post helped http://forums.macrumors.com/showthread.php?t=152407 The extract from the right post: Having run into the exact same issue myself, and having come across this thread while attempting to figure it out, I thought I'd post the answer. OS X is initially setting your hostname to what's set for your Computer Name in Sharing; however, if you're set up for DHCP and you match a current lease on your DHCP server (i.e., match the IP address of another recent user), OS X will then set your hostname to whatever the DHCP server currently has for that lease. This freaked me out incredibly at first, as I had just reformatted (having just purchased my first Mac and wanting to see how the installer worked) and knew I had not yet changed the Computer Name in Sharing -- yet my system hostname at the Terminal prompt was indeed changed to what I had previously set, pre-format. I grepped around, not finding the name anywhere save log entries; I thought either the format didn't actually properly wipe everything, or I was losing my mind. Finally I logged into my router (it's a Linksys WRT54GS running OpenWRT), and found the hostname in the current leases file. I then manually set my Mac's IP to something different, and volia! -- the hostname was back to what I expected. I hope this helps save someone from the same paranoia I went through.

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