directory. It is not a real file system, but rather a virtualized view of the kernel and environment, including files such as/proc/kcore, which is a virtual view of the entire running memory. Backing up these files is just a waste of resources./dev contains a file representation of the hardware device. If you plan to restore to a blank system, you can back up/dev. However, if you plan to restore to an installed Linux system, then backup/dev is not ne
, Microsoft Visual Studio. NET 2003. Get the latest source code for tar from www.gnu.org, version 1.13. Untie tar-1.13.tar.gz under Cygwin. The source code package. Note Do not use WinRAR or WinZip under Windows to decompress. WinRAR and WinZip will have problems extracting some tar.gz packets. Causes the directory and file after unpacking to appear abnormally. If it is a source code package, it may not be
Linux services)It is important for Linux users. Disabling unnecessary services can make Linux run more efficiently, but not all Linux services can be disabled. After installing centos Linux today, we found that many services were started when
of the mail.
Write the email name, for example, cjkmail, and run the following command:$ Uuencode
In this way, you can use the VI editor to write the cjkmail file, write the text of the letter in front, and then send it.
After receiving the letter, the recipient copies the content in the letter from cjkmail and saves it as themail. UUE. If the recipient is in Windows, you can decompress WinRAR or WinZip to see the attachment.
If the other party also
for compression, decompression, and dual-use. This is not necessarily the case for each compression and decompression program .) Therefore, if you remember the-d option, you do not need to remember the uncompress command.
Uncompress generally uses one of the following options:
-V shows the progress during the decompression process.
Similarly, these options can be added to compress-d, with the same effect.
Zip [-Option] ghost file name. zip] [file name]
Package and compress it into a file named.
Linux-(2) Basic file operations in Linux, linux-linux
In linux, everything is files, directories are files, and hardware is files. Therefore, basic file operations are especially important.
1. List the contents of the directory:
Ls
Parameters:
-A: displays all files (includ
Logout Exit SystemGedit Text Editor ToolsUname–r View kernel version information, uname–a more detailsCat/proc/cpuinfo viewing CPUsCat/proc/meminfo Viewing memoryHostname Viewing host namesIfconfig eth0 view eth0 IP AddressAlias ls= ' ls–ll ' setting aliasesTo view the path of the current terminal: TTYView current Shell:echo $SHELLAll Shell:cat/etc/shells under the current systemView CentOS System hostname Format: Echo $PS 1Distinguish internal or external commands: Type CDWhich find the locatio
Working in GNU/LinuxUnderstand GNU/Linux"UNIX is simple, and you don't need to be a genius to understand it ."Since the term GNU/Linux is too long, if it is not specified below, "Linux" refers to "GNU/Linux ".In this age, I am afraid no one needs to introduce what Linux is?
In general, the common types of compressed files in Linux are zip, gz, and tar. let's first introduce the most common zip file compression and decompression commands in Linux.
Generally, in Linux, the common types of compressed files are .zip,.gzand .tar. we will first introduce the compression and decompression commands for the latest. zip files.
The commands fo
.
As we all know,linux system everything is a file, so each process has its file descriptor, The Nginx process writes its own file descriptor to the Nginx.pid, and we need to tell Nginx to reopen a new log file (the configuration details of the log file can be seen here, simply by letting the log record what. So we need this directive:kill -USR1 `cat ${pid_path}`This instruction means: first cat to Nginx PID, is an integer, and then send the signal
Article Title: Introduction to File compression, packaging, and unbundling in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Process zip and unzip of. zip files
Zip and unzip programs are located in the/usr/bin directo
For Linux Packaging commands mdash; tar in windows, there are many compression software, such as winrar and winzip. you can package a folder. In Linux, there are two main compression commands: gzip and bzip2. the latter has a high level of compression. Players who are familiar with these two commands know that they once played the
-bit bytes, run the following command:Cat The cat (cat is the abbreviation of concatenate) command processes several files into one and saves the processing results to a separate output file, here we use it to merge the text of the mail.Write the email name, for example, cjkmail, and run the following command:$ Uuencode In this way, you can use the vi editor to write the cjkmail file, write the text of the letter in front, and then send it.After receiving the letter, the recipient copies the con
Becoming a Senior Programmer proficient in Linux programming has always been the goal of many friends. According to statistics from chinacache, the monthly salary of Linux programmers in Beijing is 1.8 times that of Windows programmers, 2.6 times that of Java programmers, and 2.9 times that of Windows programmers. At the same time, the data shows that with the increase of work experience, the income gap bet
version of Linux kernel. Currently, the ftp site of CERNet in China has a wide range of contents (including compressed kernels, patches, compilers, and so on), with fast updates, such as kernel.
3) unpack the packaged kernel
The compressed kernel, patch, and undo source code account for about 70 MB of hard disk space in total. log on with root and unlock the source code under/usr/src/linux2.2.15:
# Tar zxvf linux
indicates the fastest compression method (low compression ratio), and-9 or -- best indicates the slowest compression method (high compression ratio ). The default value is 6.
UnzipCommand
How can I expand files compressed by WinZip in Microsoft Windows in Linux? You can use the unzipcommand to unexpand a compressed file named. Zip.
Syntax: unzip [Option] compressed file name. Zip
The meanings of each opti
This series of articles summarizes Linux network stacks, including:(1) Linux Network protocol Stack Summary(2) Network multipart offload technology Gso/tso/ufo/lro/gro in non-virtualized Linux environment(3) QEMU/KVM Network multipart offload technology in virtualized Linux environment Gso/tso/ufo/lro/gro1.
Using GNU/Linux to fully understand GNU/Linux "UNIX is simple and can be understood without being a genius ." Since the term GNU/Linux is too long, if it is not specified below, "Linux" refers to "GNU/Linux ". In this age, I am afraid no one needs to introduce what
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