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1. DD Command Brief:if= input file, of= output file, ibs= bytes read at a time, obs= write bytes at a time, bs= set the number of bytes written at one time, skip= skipped BS number, count= copy block number2. Using/dev/null and/dev/zero 1. Treat/dev/null as a "black hole", which is equivalent to a write-only file, and all content written to it will be lost forever2./dev/zero is a pseudo-file, but it actually produces a continuous stream of NULL3. Test
Can02:can0: Link/canCan state error-active (berr-counter TX 0 Rx 0) restart-ms 0Bitrate 49999 sample-point 0.875TQ 2500 prop-seg 3 PHASE-SEG1 3 PHASE-SEG2 1 SJW 1XILINX_CAN:TSEG1 1..16 tseg2 1..8 sjw 1..4 BRP 1..256 brp-inc 1Clock 999999992>. Test using loopback mode:Use the loopback mode to test whether the can driver of the machine is working properly.# IP link Set can0 down# IP Link Set can0 type can bi
Linux dd command to test the read/write speed of the USB flash drive and the dd read/write speed 1. Brief description of the dd command: If = input file, of = output file, ibs = number of bytes read at a time, obs = number of bytes written at a time, bs = set the number of bytes read and write at a time, skip = number of bs skipped, count = number of copies 2. Use/dev/null and/dev/zero 1. Think of/dev/n
Platform: Zynq-7010 Core: Linux3.14.52 Xilinx official website CAN Drive Related: http://www.wiki.xilinx.com/Linux+CAN+driver 1, the kernel open can bus: 1 into the kernel source top directory cd/opt/hzzd/linux/linux-xlnx-xilinx-v2014.2.01/2) make Arch=arm Cross_compile=arm-xili Nx-linux-gnueabi-menuconfig 3) Select "Networking Support"-> "Can bus subsystem support"-> "can device drivers"-> "Xilinx can", save exit; 2. Add in Device tree: For Zynq Ca
CentOS raid Hard Drive Speed Test Syntax: hdparm [-partition hiiqttvyyz] [-a Note: hdparm can be detected to display and set the parameters of the IDE or SCSI hard disk.Parameters:-A -A -C -C: detects the power management mode of the IDE hard disk.-D -F writes the data in the memory buffer to the hard disk and clarifies the buffer.-G: displays the disk's magnetic track, Head, magnetic area, and other parame
) , install a good serial port driver can be written to the Development Board on the system, then the Android_fs.tar mmc.bin zimage copied to the SD card, the SD card into the Development Board, set up the Development Board boot mode to the SD card boot, start burning from SD card system.Different kinds of development Board to write the system in a similar way, when you get a development board, you should learn from the development of the Board of information on the way the system is written.And
1. DD Command Brief:if= input file, of= output file, ibs= bytes read at a time, obs= write bytes at a time, bs= set the number of bytes written at one time, skip= skipped BS number, count= copy block number2. Using/dev/null and/dev/zero 1. Treat/dev/null as a "black hole", which is equivalent to a write-only file, and all content written to it will be lost forever2./dev/zero is a pseudo-file, but it actually produces a continuous stream of NULL3. Test
Due to business needs, the need to re-integrate the cabinet, before shutting down I have used the command TUNE2FS to set the hard drive to cancel self-test, but the system at startup or prompted to check the /dev/sdb1 hard disk has been stuck here, Had to call the staff of the room to help solve, into the fast start mode in fact, and single-user almost, just the instructions are not the same, input instruc
Modular drive testing, is to learn from the programming language of the modular thinking, the repeated operation of the independent success of the announcement module, understand the use of this module during the execution of the case is called when the operation is required, which can greatly eliminate duplication and improve the maintainability of test casesThe following specific 126 mailbox as an example
I have always recommended the use of Group Policy to turn off AutoPlay, today in the forum to see a skeptical post, the post tried to explain a point of view-to avoid double-clicking or inserting a U disk (Mobile hard drive) poisoning methods, only by the Group Policy Editor is not valid. The relevant registry key value needs to be modified. I was careful to do a 20-minute test.
General hard drive bootstrap failure, if not the primary boot sector or the DOS boot sector is damaged (such as virus infection), then the other symptoms are basically caused by some hard disk-related hardware failures. Software can be used to kill antivirus software boot sector virus, or with Norton, Debug, such as repair (more trouble), and hardware may be based on the information prompted after the post analysis. 1, Post completed and prompted the
Hdparm command to test the hard disk speed.Parameters:-A indicates whether the disk pre-read function is disabled. For reading large files, this obviously improves the performance.-A: Set the hard drive cache read feature. It may be hard disk cache Switch-G: displays the disk's magnetic track, Head, magnetic area, and other parameters.-I displays the hardware specification information of the hard disk, whic
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