(MAC) or using the middle mouse button to use the mouse to vertical multi-line selection;Ctrl + mouse button (Win) or command+ left mouse button (MAC) to manually select multiple text to edit at the same timeThere are a lot of similar techniques, please add ...shift+ the right mouse button to easily implement multi-line editing, batch to prefix the variableLightning-Fast File switching:Let's say you open multiple files at the same time, or you often have to edit different files in your project,
BROKEN -lists incomplete ptfs lslv -m hd5 -finds boot drive under pv1 column lsps -a -checks available paging space lsps -s -checks available paging space lspv -lists information about the physical volumes lspv hdisk# -list drive info lspv -l hdisk# -lists logical volume group disk in lsuser -f ALL -lists all attributes for all users lsvg -lists volume groups lsvg -p XXXXXX -lists disks in volume group (xxxxx= volume name) more -reads files and displays the text one screen at a time.
First of all, so far the issue of USB flash drive encountered, the first problem is "system Volume Information", not yet resolved, this problem may cause the USB drive failed to start, I guess it may be because each time the OS is written to the USB flash drive when the original information is not erased, This leads to the execution of information that has not been overwritten as an instruction. This problem I will continue to track down, and strive to find the real cause of this problem is what
for 3.3 V and 5 V power supplies with low power consumption and small portable devices with limited space. The DOC2000 structure mainly consists of SystemIterface, BootBlock, Flash control, and Flash storage media.
The System Interface Unit provides an interface similar to SRAM for DOC2000 to establish a connection with the operating system through the CPU's local bus, ISA bus, and SRAM bus. DOC provides the chip selection signal (CE #), read/write signal (WE #), enable signal (OE #), and 13-b
1. Start Analysis
IPL (in norflash or msm7201a)-> Spl (NAND)-> Linux (NAND)SPL is also called bootloader.2. Flash Method
2.1 bootloader
Use the fasstboot protocol to fl the machine through USB interface and hostIn this mode, you cannot refresh Bootloader and radio.The bootload of the G1 factory does not support fastboot, And the adp1 supports fastboot.2.2 recovery
This pattern is flushed through update.zip In the SDK cardYou can write any image, i
seconds, 10 seconds, 40 secondsThis key toggles whether to show the total traffic per connectionJ/k Press the J key or the K key to scroll up or down to display the current connection informationL Use this key to open the Iftop output filtering function, such as Enter the IP to be displayed, press ENTER, the screen will display only the traffic information related to this IPL Use this key to toggle the display Flow scale range, the scale is different
A statistic of 256 programming languages, of course, only a few of these languages are common or practical.
1951–regional Assembly Language
1952–autocode
1954–IPL (The ancestor of the Lisp language)
1955–flow-matic (the ancestor of the COBOL language)
1957–fortran (first compiled language)
1957–comtran (the ancestor of the COBOL language)
1958–lisp
1958–algol 58
1959–fact (the ancestor of the COBOL language)
1959–cobol
1959–rpg
requested and some adjacent data (a cache line). This means that if ARRAY[I][J] is in the CPU cache, then array[i][j+1] is likely to be in the cache, but Array[i+1][j] may still be in memory;
6. Consideration of instruction-level parallelism (IPL)
Although many programs are still single-threaded, modern CPUs can have significant parallelism on a single core. This means that a single CPU may also perform 4 floating-point multiplication,
, only a few of these languages are common or practical.
1951–regional Assembly Language
1952–autocode
1954–IPL (The ancestor of the Lisp language)
1955–flow-matic (the ancestor of the COBOL language)
1957–fortran (first compiled language)
1957–comtran (the ancestor of the COBOL language)
1958–lisp
1958–algol 58
1959–fact (the ancestor of the COBOL language)
1959–cobol
1959–rpg
1962–apl
1962–simula
1962–snobol
1963–cpl
-boot, the most common optimization methods are:
Remove the function: such as Network load, if not required, then directly remove the code it;To turn off unwanted featuresTurn off kernel mirroring verificationTurn off bootstrapper outputTurn off startup delay
Modify the generic functionality of the bootstrapper to an optimized initial loader (Initial program LOADER,IPL), which can be implemented through SPL (Second program Loader, second stage loade
Management unit).
For U-boot, the most common optimization methods are:
• Delete the function: such as Network load, if not required, then directly remove the code
• Turn off features that you don't need
• Turn off kernel mirroring verification
• Turn off bootstrapper output
• Turn off startup delay
Modify the generic functionality of the bootstrapper to an optimized initial loader (Initial program LOADER,IPL), which can be implemented through
connected to a Z/VM virtual switch
storage device size to meet the minimum requirements of the system, such as the use of two 3390-3 DASD, you can also use a 3390-9 DASD to meet storage requirements.
The Z/VM account (LNXDEMO) configuration information used in this article is as follows:
USER lnxdemo passw0rd 2G 4G BCEG
CPU BASE
CPU 01
IPL CMS
MACHINE ESA 4
CONSOLE 0009 3215 T
IUCV any
OPTION Applmon Lnknopas
SPOOL 000C 2540 READER *
SPOO
Friends in the process of using the computer, inevitably encounter a lot of sudden failures, the cause of these failures may be caused by software, but also may be caused by hardware failures, or other factors, then we are the primary computer users how to deal with these events, please see below: suffered a power outage phenomenon: monitor, host, speaker, etc. will be "forcibly closed" in a flash. Phenomenon Analysis: This is a sudden "blackout
I. ASM fast disk Resync Overview
1) when we take a disk offline in case the disk is already upted or database is not able to read or write from the disk. in case of Oracle Database 10 Gb, Oracle engine use to balance the other disks with the content of offline disk. this process was a relatively costly operation, and cocould take hours to complete, even if the disk failure was only a transient failure.
2) Oracle Database 11g introduces the ASM fast mirror Resync feature that signiicantly CES the
When a power outage occurs in a medium-sized enterprise data center, what is a power switch? What is a medium-sized data center? The number of servers is more than 100, and the number of servers is less than 1000. Why do enterprises have to worry about power outages? The self-built IDC of medium-sized enterprises cannot have such high redundancy as IDC, so it is inevitable that there will be a power outage.The Shenzhen Software Park and Chengdu Tianfu
IntroductionThe theory foundation of distributed systems-conformance, 2PC and 3PC describes the issues of consistency, the need to reach a consensus, and the 2PC, 3PC model, where the Paxos protocol guarantees consistent resolution in the scenario of node downtime recovery, message sprawl or loss, and network differentiation. Is the most widely discussed consistency agreement.Paxos agreement at the same time with its "obscures" known, the following combination of Paxos made simple, the part-time
packet, the device returns to the handshake packet according to the situation, and the ACK indicates that the data has been received correctly, and notifies the host to start the next 0UT transaction in order to transmit the next packet, and the NAK to indicate that the data is received correctly, but the host does not send the data because the device is temporarily unavailable (e.g. buffer full If the endpoint is terminated, return to stall and notify the host not to re-send the data because t
Kafka in versions prior to 0.8, the high availablity mechanism was not provided, and once one or more broker outages, all partition on the outage were unable to continue serving. If the broker can never recover, or a disk fails, the data on it will be lost. One of Kafka's design goals is to provide data persistence, and for distributed systems, especially when the cluster scale rises to a certain extent, the likelihood of one or more machines going do
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