compression and decompression file, display the filename and compression ratio. -num adjusts the speed of compression with the specified number num,-1 or--fast represents the fastest compression method (low compression ratio), 9 or--best represents the slowest compression method (high compression ratio). The system default value is 6. instruction Example: Gzip *% compress each file in the current directory
Previously wrote an article: MVC: Uploading FilesAdd the next feature today: How to limit upload file typesFile types can be limited in the previous paragraph, but are too easy to bypass, preferably in the back-end processing.To modify the Upload method code:[HttpPost] Publicactionresult Upload (httppostedfilebase file) {if(F
I. Classification of documentsF File Common FilesD Directory DirectoriesL symlink softlink Symbolic link/soft Connect1, f File Ordinary files1). binary Files-commands2). data file-data-can only be viewed by the specified command3). text file[Email protected] ~]# ls-l/etc/hosts/bin/gawk/tmp/etc.tar.gz-rwxr-xr-x. 1 root
Tags: case hard link Shutdown Command shortcut directory file explain software start sock1. Shutdown command:Halt;reboot;shutdown can use man shutdown to see its detailed explanationshutdown [option] TimeOption-h:halt-r:reboot-c:cancleTime:hh:mmNow+#2 users: Get credentials for a resource or serviceLinux path:/home/caseyLinux file types1. Strictly case-sensitive2, can use any character, not carriage return,
bytes) number; column 3 and 4 indicate the number of used and available data blocks, respectively. The user may be surprised that the sum of the blocks in column 3 and 4 is not equal to the number of blocks in column 3. This is because by default, each partition leaves a small amount of space for the system administrator to use. Even if the common user space is full, the administrator can still log on and leave the workspace required to solve the problem. The Use % column in the list indicates
Set the content-type of common file types in php Headers
This article describes how to set content-type for common file types in php headers. For more information, see
In PHP, you can use the header function to send header information and set the content-type of the file. Th
I. File type1 File typesPlain files (regular file): Plain text document (ASCII), binary (binary), data format file.2 contents (directory)3 Symbolic Link file: Similar to shortcuts in Windows.4 Device: block (block) device, storing data to provide system random access to the
File Types supported by VC
In VC ++ 6.0 ,*. CLW ,*. DSP ,*. DSW ,*. NCB ,*. opt ,*. RC ,*. PLG ,*. ILK ,*. PCH ,*. PDB ,*. res ,*. what files are IDB files? What can be used separately?
DSW: developer Studio
Workspace, the highest level configuration file, records the configuration information of the entire workspace. It is a plain text
Original: MVC authentication 12-use dataannotationsextensions to validate integers, messages, minimums, file types, URL addresses, and moreThis article experiences from http://dataannotationsextensions.org/ DATAANNOTATIONSEXTENSIONS.MVC3, which is an extension of dataannotation, can perform two-step verification on both the client and the server, and the types th
Linux Environment-The Python environment is installed by default for most Linux distributions.-Enter Python to launch Python interactive mode-Recommended use of VIM for program editors
Windows environment-Download the MSI package to install Python directly-A GUI development environment that comes with Python-Many development tools
# Linux Interactive interface [[email protected] ~]# Pythonpython 2.6.6 (r266:84292, Jan, 09:37:14) [GCC 4.4.7 20120313 (Red Hat 4.4.7 -4)] on Linux2type ' he
There are 3 types of Python files: source code files, compiled files, optimized files.Source code files: Files that end with ". Py" for code saved for the development program.Compile file: The file ends with ". PYc", assuming that the source file is 1.py, if 1.py is compiled to 1.PYC, enter the following code in 2.py:#
*: matches any character of any length? : Matches a single character[]: matches any single character within the specified range of characters, not case-sensitive[[: Upper:]] Uppercase[[: Lower:]] lowercase letters[[: Alpha:]] uppercase and lowercase letters[[: Digit:]] Number[[: Alnum:]] Mixed alphanumeric[[: Space:]] Space[[: Punct:]] punctuation special characters[^]: matches any single character outside the specified range of charactersPractice: Copy/etc directory starting with p, with
and. For example 7=4+2+1, so 7 represents a readable writable executable. 5=4+1, so 5 represents a readable executable that is not writable. 0 means unreadable, non-writable, non-executableIii. The owner of the document and the group to which it belongs1. Change the file ownercommand: Chown user name fileExample: Chown work test.txt (change the owner of the Test.txt to work)2. Change the group to which the file
Php uses the header to set content-type and content-type of common file types. in PHP, you can use the header function to send header information, or set the content-type of the file, the following describes the content-type values of common file types.
// Date 2015-06-22 /
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