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determine whether the string ends, but the string does not have a normal use terminatorc) Use strcpy, strcat, sprintf, strcmp, strcasecmp and other string manipulation functions, the target string read/write burst. You should use strncpy, strlcpy, Strncat, Strlcat, snprintf, strncmp, strncasecmp, and other functions to prevent read and write out of bounds.2 multithreaded threads use a thread-unsafe function.The following reentrant functions should be used, with particular attention to the red-l

string to the burst. Functions such as strncpy, strlcpy, Strncat, Strlcat, snprintf, strncmp, strncasecmp, etc. should be used to prevent reading and writing from crossing boundaries. 2, multithreaded programs use a thread-unsafe function. You should use the following reentrant functions, which can easily be used incorrectly: Asctime_r (3c) Gethostbyname_r (3n) getservbyname_r (3n) ctermid_r (3s) gethostent_r (3n) getservbyport_r (3n) Ctime_r (

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How is Linux going to partition a piece of disk partition and use it? Processes such as650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/3C/20/wKioL1PA5fvj5VhvAADvlciwNEs674.jpg "title=" The process of formatting a disk partition. png "alt=" wkiol1pa5fvj5vhvaadvlciwnes674.jpg "/>1. Partitioning(1), first , know whether a disk has space is not partitioned?Partitioning is based on the cylinder (cylinders), there is no remaining cylinder can be

Hdparm hard disk parameter display and settings-general Linux technology-Linux technology and application information, the following is a detailed description. Hdparm hard disk parameter display and setting Jul 28 Hdparm hard disk parameter display and setting Filed under: Linux/Unix | . Display hard disk settings [Root @ cnscn ~] # Hdparm/dev/sda /Dev/sda: IO_support = 0 (default 16-bit) Readonly = 0 (off

coredump. Here we will summarize the reasons based on previous experience: 1 memory access out of bounds A) array access is out of bounds due to incorrect subscript. B) when searching for a string, the string Terminator is used to determine whether the string ends, but the string does not use the terminator normally. C) use strcpy, strcat, sprintf, strcmp, strcasecmp, and other string operation functions to read/write the target string. Functions such as strncpy, strlcpy, strncat, strlcat, snpr

1. OverviewVISUALSVN server is a free Windows Apache Subversion Server package. The server package contains a streamlined Apache HTTP server, Subversion server, and a Microsoft Admin Console configuration interface that can be installed on the Windows platform with a single click of the Subversion server. Easy to use, but also to achieve more complex directory rights management.The official website has two versions: https://www.visualsvn.com/server/, standard version free, Enterprise Edition has

3c partitionmagic Linux C4 drdos/sec (fat-3 Xenix usr Venix 80286 os/2 hidden c:c6 drdos/sec (fat-4 FAT16 5 Extended SFS, NTFS volume set da non-fs dataHex code (type L to list codes): 83 input partition typeCommand (M for help): p shows the partitioned table that has been establisheddisk/dev/sda:21.5 GB, 21474836480 bytes255 heads, Sectors/track, 2610 cylindersUnits = Cylinders of 16065 * 8225280 bytesSec

I haven't forgotten the operation for a long time. I have to practice it again to make my impression better.These operations are performed on the vmwarevm. First install RHEL5 on/dev/sda. After installation, four hard disks are added:/dev/sdb,/dev/sdc,/dev/sdd, And/dev/sde, first look at the disk situation: [root@www.linuxidc.com ~] # Fdisk-l Disk/dev/sda: 15.0 GB, 15032385536 bytes 255 heads, 63 sectors/tr

First, MBR master boot recordThe MBR has 512 bytes and is divided into three parts: the first part is 446 bytes, the boot partition is stored, the second part 64 bytes is the partition table, the third part is 2 byte terminator, and each partition requires 16 bytes, so MBR mode can only divide 4 primary partition or 3 primary partition and extended partition The primary partition can be used directly, the extended partition cannot be used directly, and the logical partition is reused on the exte

I configured. record it for future reference.After the installation is complete [Root @ localhost ~] # Fdisk-l/dev/sda Disk/dev/sda: 42.9 GB, 42949672960 bytes 255 heads, 63 sectors/track, 5221 cylinders, total 83886080 sectors Units = sectors of 1*512 = 512 bytes Sector size (logical/physical): 512 bytes/512 bytes I/O size (minimum/optimal): 512 bytes/512 bytes Disk identifier: 0x000d1cc8 Dev

Raid implementation:Raid: cheap redundant disk array, which turns several hard disks into a wholeLater, because it lost its original cheap purpose and became very expensive, it changed its nameIndependent redundant disk arrayAlthough we cannot implement raid on hardware, we can still implement raid because of our limited strength and we didn't buy those devices.Next we will look at how to implement soft RAID: 1. Implementation of soft RAID 0:First, we will introduce the principle of RAID 0. RAID

Test scenario: VMware 11Test system: Red Hat Enterprise Linux 7We all know that the swap partitions in the Linux system are in separate partitions, so we're going to create a new swap partition:[Email protected] ~]# fdisk/dev/SDA Welcome to use FDISK (Util-linux2.23.2). The changes will remain in memory until you decide to write the changes to disk. Think twice before you use the Write command. Command (enter M for help): N #创建新分区Partition type:p Prim

|+------------------------------------+------------+Rows in Set (0.00 sec) MARIADB [(None)]> Is it backward from the server to the primary server:MARIADB [(none)]> show Slave status\g Seconds_behind_master:null NULL The thread does not startseconds_behind_master:0 0 without delay.If this value is only fluctuating, not bigger, then the problem is not big, if once the value becomes larger, then manually intervene Installation package: percona-toolkit-2.2.4-1.noarch.rpmPt-summary View System P

Release date: 2012-03-14Updated on: Affected Systems:Sourceforge asaanCart 0.9Description:--------------------------------------------------------------------------------Bugtraq id: 52498Cve id: CVE-2012-5331 AsaanCart is an online shopping cart solution designed for small businesses. AsaanCart 0.9 has the directory traversal vulnerability. You can use the page parameter "..." in index. php to allow remote attackers to include arbitrary local files. *> Test method:-------------------------------

Release date: 2012-03-14Updated on: Affected Systems:Sourceforge asaanCart 0.9Description:--------------------------------------------------------------------------------Bugtraq id: 52498Cve id: CVE-2012-5330 AsaanCart is an online shopping cart solution designed for small businesses. AsaanCart 0.9 has Multiple XSS vulnerabilities, allowing remote attackers to send data to calc through PATH_INFO. php, chat. php, register. php, index. input parameters in php or the page parameter to libs/smarty_a

These days to solve the STM32 MCU's I²c bus occupancy (bus BUSY) problem, feel is a good learning, from the text can be learned from the thinking of the problem of the logical logic, the end of the text and pointed out that often error points, in this share to everyone.Problem description stm32f207 MCU has three groups of I2C,I2C1~I2C3, the first edition of this project hardware using I2C1 three chip (Dsp/codec/eeprom), the operation is good. But the new hardware to move the codec/e

Drivers for all of the Ferroelectric series of I²c Fram are applicable, only the capacity, level (3V and 5V) different, the driver is for 51MCU, but for the other MCU as long as a slight modification can be used. When the amount of storage data is small, and the frequency of read and write frequently, you can choose the I²c FRAM. This CODE is designed to demonstrate how the fm24c04/fm24c04a SERIAL FRAM COULDBe interfaced to the 8051 microcontroller. The INTERFACE USES 2 LINESFrom PORT 2 (P2.7 an

The driver is suitable for all Ferroelectric series I2C Fram, only the capacity, level (3V and 5V), the driver is for 51MCU, but only slightly modified for other MCU can be used. When the amount of storage data is small and the frequency of reading and writing is frequent, I2C FRAM can be selected. This CODE is designed to demonstrate how the fm24c04/fm24c04a serial FRAM couldBe interfaced to the 8051 microcontroller. The INTERFACE USES 2 LINESFrom PORT 2 (P2.7 and P2.6) to communicate.The CODE