Properties
The catalog can be displayed or modified by attributes. attrib for the directory, you must explicitly give the directory name, not the wildcard character. For example, to hide the directory C:secret, you can enter a command:
The code is as follows
Copy Code
ATTRIB +h C:secret
The following command works only on files and does not affect the directory
The code is as follows
Copy Code
ATTRIB +h C:*.*
View Ar
languages.
MS-DOS 4.0 adds the dosshell operating environment and has some other enhancements and updates.
MS-DOS 5.0 was released in 1991, with good memory management and macro functions and enhanced dosshell.
MS-DOS 6.x large increase in graphic interfacesProgram(Such as Scandisk, defrag, and msbackup), added support for 586 computers, disk compression, and other functions, and enhanced support for Windows.
MS-DOS 7.0 added long file name, LBA
4.0 adds a Dosshell operating environment with some additional enhancements and updates.
MS-DOS 5.0 was released in 1991 and has added good memory management and macro capabilities to enhance Dosshell.
MS-DOS 6.x has increased the number of graphical interface programs (such as scandisk,defrag,msbackup, etc.), increased support for 586 of computers, disk compression, and enhanced Windows support.
MS-DOS 7.0 adds features such as long file names, L
= 64 time = 0.887 MS64 bytes from 192.168.1.20: icmp_seq = 3 ttl = 64 time = 0.813 MS--- 192.168.1.20 ping statistics ---3 packets transmitted, 3 bytes ed, 0% packet loss, time 2004 msRtt min/avg/max/mdev = 0.813/0.896/0.989/0.076 MSMaster Server running...Now we turn off the master server (network cable disconnection is better than power off), and the backup server will start to take over.--- 192.168.1.20 ping statistics ---3 packets transmitted, 3 bytes ed, 0% packet loss, time 1999 msRtt min
Virus Introduction:
tpvo/3783 virus is a contagious, hidden virus, it is unique to be able to infect Windows files, so that the virus can host memory when Windows executes. The virus infects the hard drive, the floppy boot area and WINDOWS, DOS executables, including. exe.com.ovl.386 and so on files, not infected with the file covered, the program was infected after the length of 3783 bytes increased, the file date was added 100 years as an infection mark.
After the virus resides in memory, wi
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