acquia dev

Transferred from: http://loofeer.blog.51cto.com/707932/791065The default system will load/DEV/SHM, which is called TMPFS, some say with RAMDisk (virtual disk), but not the same. Like a virtual disk, TMPFS can use your RAM, but it can also be stored using your swap partition. And the traditional virtual disk is a block device, and requires a command such as MKFS to really use it, TMPFS is a file system, not a block device; you just install it and it's

error message:[Root@compute2 ~]# pvcreate-vvv/dev/sdb1 ... DEVICE/DEV/SDB1 not found (or ignored by filtering). No devices to process. Unlocking/run/lock/lvm/p_orphans _undo_flock/run/lock/lvm/p_orphans Lvmcache has no info for vgname "#orphans". Setting Global/notify_dbus to 1 completed:pvcreate-vvv/dev/sdb1 Solution idea:1. See if there are/

Today use BuildRoot to compile the file system to write to the Development Board boot prompt below the errorCan‘T open/dev/ttys0:no such file or directoryCan‘T open/dev/ttys0:no such file or directoryCan‘T open/dev/ttys0:no such file or directoryCan‘T open/dev/ttys0:no such file or directoryCan‘T open/

/Dev/null 2> 1 details today a friend suddenly saw the following content in his own Linux maintained:/var/spool/cron/root: www.2cto.com 30 19 ****/usr/bin/** dcon. sh>/dev/null 2> 159 23 ** 1-7/home/s **-log/squid-log.renew>/dev/null 2> 150 1 ** 1- 7/usr/local/src/** log. sh>/dev/null 2> 120 2 ** 1-7/home/sq **-log

Set/Dev/nullAs"Black hole".It is very equivalent to writing only files. All the content written to it will be lost forever. However, you cannot read anything when trying to read the content from it. However,/Dev/nullIt is very useful for command lines and scripts. DisableStandard output. 1 cat $ FILENAME>/dev/null 2 # The file content is lost with

You can use a timer to clear logs: Several Methods to quickly clear the file content: $:> filename # Where: A placeholder does not produce any output. $> filename $ echo ""> filename $ echo/dev/null> filename $ echo> filename $ CAT/dev/null> filename However, logs play a certain role. For example, the following is an example: Analysis of an example of failure in rebuilding the index using sphinx You can ru

Chrome Dev toolsIntroduce the basic usage of chrome Dev tools and some unexpected tips Chrome developer tools is a series of embedded editing and debugging tools in chrome. It can effectively track layout issues, set breakpoints for Javascript, and optimize programs. ==== Open mode ====CTRL + Shift + I open/close the debugging tool. (The tab is displayed before the last close)CTRL + Shift + J open/close the

; file. In Linux Shell, "2> 1" indicates that the script is:Nohup/mnt/nand3/h2000g>/dev/null 2> 1 For 1, it should be file descriptor 1, while 1 generally represents stdout_fileno. In fact, this operation is a dup2 (2) Call. it outputs the standard output to all_result, and then copies the standard output to file descriptor 2 (stderr_fileno). The consequence is that file descriptors 1 and 2 point to the same file table item, it can also be said tha

On July 6, July 6, RIM held a developer conference at Millennium Hotel Beijing. About 300 or 400 people attended the event, some of which were from other cities and seemed to have arrived from abroad. At the meeting, RIM listed three concepts of Blackberry 10: flow, connect, and extend. These concepts are also presented in several videos played. What impressed me was its brand-new timeline camera model. This highlight was described in the most popular language, and it was very much worth looking

Dev-PHP released 3.00 Alpha 3, but it still does not feel any climate.Http://devphp.sourceforge.net/dev3/[202.169.2004] after a month of hard work, I am grad to announce the immediate availability of the third alpha release of Dev-PHP 3.00.Maybe the biggest change in this release is the return of the multilanguage support, which was completely rewritten from scratch to improve usability. if you make a good

AbstractWelcome to various questions about the de2/DE2-70 release, it includes C/C ++, OpenGL, FPGA, Quartus II, niosii, Modelsim, system-level Block Storage, system-level Block Storage, aveon bus, μ c/OS-II, and μ Clinux. IntroductionThere are more and more online friends discussing de2 related technologies. If you are related to this blog, please leave a comment to discuss it, if you want to ask your questions, welcome to the de2 Dev website for fu

After the source code of 2.3 is downloaded and compiled, the boot simulator usually does not have a storage card (SD card) mounted, which leads to a problem: many tests that require the SD card cannot be done, for example, you want to use traceview to track your program (you need to generate a traceview file), operate images (How do you push images without a memory card), and some applications, such as camera, cannot be used. Let's talk about the process: First create your sdcard file: mksdcar

Open ("/dev/null ",..) Many programs have to do this at the beginning./** Make sure we have stdin/stdout/stderr Reserved*/ While (t = open ("/dev/null", o_rdwr) If (T> = 3) Close (t) Data written to/dev/null will be discarded by the system.Protects stdin, stdout, and stderr, as written in annotations.In the code, the while operator is used to distribute the fi

During the inspection today, we found that the RMAN backup of one server was abnormal and failed to be properly backed up for a while. Check the script. The scheduled task list is normal. Check the/var/log/cron content. An exception was reported when I created a 1.txt file on the mount point. Content: Mount: block device/dev/emcpowerc1 is write-protected, mounting read-only. It turns out that the disk is read-only and cannot be written, resulting in b

Problem descriptionSolve the problemWith the Ntfsfix command to resolve, first this command depends on ntfs-3g This package, if not installed, first to follow the following command to install:sudo apt-get install ntfs-3gThen use Ntfsfix to repair the corresponding partition, such as "Error Mounting/dev/sda5 At/media" errors, then repair with the following command, can be accessed after the repair.sudo ntfsfix /dev