duel links

Hard Links: LinkPopular understanding: multiple names from a fileFeatures: ln (link) the original and destination files are not in a directoryDelete a file and another file can also use themultiple hard links occupy only one copy of the data spaceno cross-section, cross-devicehard links cannot be created for a catalog. Common Hard-link methods:ln Raw File Link fi

disks, slices, cylindersHttp://blog.chinaunix.net/uid-13245160-id-84370.htmlHttp://blog.chinaunix.net/uid-17246314-id-5676479.htmlLow-level format: The low-level format is to re-empty the contents of the disk, restore the state of the factory, divided the cylinder and track, and then divided into a number of sectors, each sector is divided into the identity of the part ID, Gap and data area of the database.Partition: File systemMbr:bootloader (446 bytes), partition table (64 bytes, 4 partitions)

Command name: LNFunction: Generate link filedirectory where the command is located:/BIN/LNUsage: LN [-S] Original file destination fileParameters:-S create a soft link (do not write this parameter to generate a hard link)Soft Links:Similar to shortcuts in Windows. It's just a link to the file it points to.Hard links (The most important principle is that the hard link is the same as the I node of the original file):A hard-link file is equivalent to cop

In a Linux system, there are two types of links : One called hard link, and the other is called symbolic link or soft link (symbolic link). 1) by default, theln command creates a hard link without parameters. 2) The hard link file is the same as the Inode node number of the source file , and the inode number of the soft link file differs from the source file. 3) The ln command cannot create a hard link to a directory, but it can create soft

In the process of learning Linux, I often put soft hard links, so today specializes in a number of data, and then integrated in their own blog, easy to review later, view. On the one hand also because saw Vamei Linux concept and System series articles, feel not complete to do some supplement. Soft links correspond to shortcuts in Windows. Hard link is equivalent to a disaster preparedness system, data sto

implemented, of course, this knowledge is a small problem, that is, the absence of the corresponding. dll file, add in can be executed (why compile no problem, and run a problem. There are answers later). But as a programmer, need to have a problem, know it, we must know why (I am the opposite is the case, perhaps some programmers are very opposed to this view, because their point of view is as long as the use of the line), and then on a variety of Baidu, turn the book, the following personal i

1. The hard link file and the original file point to the same data, the two are like clones, the inode number is the same, when the original file is deleted, The hard-link file still exists in effect. But a hard-link file differs from a file's copy. It should be said that the production of hard link files is onlythe original documentThe contents of the directory file change, the original file data is not copied, and the copy file, on disk There are two copies of the data. SimpleThat a hard

the correct run-time addresses. Static links 1. Generate a static library# g++-C a.cc b.cc# g++ ar RCS LIBAB.A a.o b.o# g++-static-o prog main.o./LIBAB.AWith this form, multiple target modules can be packaged into a single file, called a static library. When linking to a static library, only the target module referenced by the program is copied, but it is important to note that the order in which the files appear on the command line mus

1.Linux Link ConceptThere are two types of Linux links, one called hard links, and the other called Symbolic links (symbolic link). By default, the LN command produces a hard link."Hard Connect"A hard connection is a connection that is made through an index node. In a Linux file system, a file saved in a disk partition, regardless of the type, assigns a number to

Recently I have been doing the site's external links work, so spend a lot of time in the ADMIN5 webmaster Online search on the construction of the chain of articles, especially high-quality links, the author in the AMDIN5 webmaster network to see Quick to create high-quality links (iii): NET This article, The author has done the classification information of the

Download movies with Ubuntu: magnetic links, torrent, Thunderbolt links Operating system: Ubuntu 14.04 64-bitRequired Software: ktorent, AmuleInstall the Software:sudo apt-get install ktorrentsudo apt-get install AmuleDownload Magnetic Links:1. Open the Ktorrent->open URL2. Copy the magnetic link address and paste it in the Address bar. Such as:Downl

In the process of using Linux, the most user headache should be the Linux unique command line, and not so many command line has let us complain incessantly, the key each command has a lot of options, of course, this is what we often say that the Linux command line is a very powerful function of a very important reason, It is these options that make each of our commands full of variables, and no longer a monotonous picture. Today, say a more important command in the command: ln (the shorthand for

For a new site, the exchange of links is actually a better way. Because when your site is not ranked in the search engine, you can hardly expect others to automatically link to your site because they like your content. You can only actively contact other websites to exchange links. Every day I received no more than twenty or thirty requests for exchange links.

1.diff--view two files in different places, comparing two files.#diff/etc/passwd/tmp/passwd2.uniq--Removing duplicate rows-C Statistics Number of rows in duplicate-I ignores case-D displays only duplicate rows# UNIQ/TMP/PASSWDUniq-d/TMP/PASSWD | Head-2 > Aa.txt3.sort--Sort 7-R Reverse- n Sort by numbers-U Merge Homogeneous- t Specify delimiter-K refers to the column of the wordhead/etc/passwd | Sort-t ': '-k3-nDu | Sort-n-R | Head-n 34.cut--can remove specified character segments between rows-D

1. Hard link: A is a hard link to B, then A and B point to the same index node (inode), delete A and b any one has no effect on the other. Each additional hard link, the number of links on the Inode node plus one, deletes a hard node, and the number of links is reduced by one until the 0,inode node and its pair of data blocks are recycled. Folders cannot have hard links