dos命令应用100（DOS command application 100）1, short.*. * can be used. Instead, for example, delete all the files in the current directory.DEL.2, returns the parent directory, which is the higher directoryCD..3, the list of directory files into the text fileDIR /b >filename4. Check the properties of any property in the current directoryMethod one: DIR,Method two: DIR/A5, cancel all attributes of all files in the current directoryATTRIB,If this command is executed in the root directory of C, then use DIR to view, you can see the IO.SYS, MSDOS.SYS and other hidden files.6. Displays all subdirectories in the current directoryDIR/AD7 、 displays the contents of multiple files in successionCOPY * CON *.8, split screen display file contentMethod one: MORE<filenameMethod two: TYPE filename|more9. Change the registration time of disk filesMethod: COPY FilenameNULMethods: two COPY Filename,,10, how to shield the output information of DOS rows?The method is to redirect the screen output to the DOS null device, NUL, for example:COPY MYPROG.EXE A:>NUL11, in the DOS state, directly display D edit WPS file contentCOPY filename.wps CON/B12, append data to a text fileMethod: COPY FilenameCONMethod two: TYPE CON>>filenameAfter the input is complete, press F6 or Ctrl + Z key to finish.13, keyboard fingering exercises or simple screen for Chinese character input practiceCOPY CON NUL14. Print the contents of the keyboard input directly Method one: COPY, CON, PRNMethod two: MORE>PRNMethod three: SORT>PRNWhen the input is complete, press F6 or Ctrl + Z key.15, DOS directly edit the generated fileIn the absence of any editing software (such as EDLIN, EDIT, etc.), you can temporarily edit the file from the keyboard using the following six methods. When the file has been entered, press the F6 key or press Ctrl + Z to save itMethod one: COPY, CON, filenameMethod two: TYPE CON>filenameMethod three: MORE>filenameMethod four: SORT>filenameMethod five: FIND, "XXX", /V/N>filenameMethod six: SORT|FIND, "XXX", /V/N>filenameMethods four or five and six are of special use, readers may wish to try.16, zero byte file generationMethod: TYPE NUL>filenameThe above methods are often used to deal with the disk files that need to be kept secret, and play the role of deleting the contents of files. After the contents have been deleted, they can not be recovered.17, zero byte file copy, you can not use the COPY command, you can only use the XCOPY command.For example: XCOPY, filename1, filename218. Copy all the files and subdirectories in the directoryXCOPY directory name. Drive letter: /S19, how to correctly use the COPY and XCOPY commands?When you associate several files into a single file, you should use the COPY command.Copy a single file smaller than 64KB, using the COPY command. Copies of files larger than 64KB should use the XCOPY command.To copy multiple files, use the XCOPY command.The copies of children of the contents of the folder, you should use the XCOPY/S command. To copy a batch of files to a floppy disk, use the XCOPY/M command.20 when will the XCOPY command be used for the /D switch?Sometimes you need to choose from a directory, build or modify files from one day, and backup them. Use the XCOPY/D command at this point. For example, the following command can be used to copy C: directory that is built or modified after July 1, 1996 to file a:XCOPY C:*.* A:/D:07019621, single floppy copy floppy diskSome PC only equipped with a floppy disk drive, the drive is a drive when and when the use of B disk, if the floppy copy in such a system, use the following command: XCOPYXCOPY A: B:22. tidy up the broken pieces in the floppy disk to improve the efficiencyA floppy disk after establishment and delete files after the operation, some records will not be stored in the form of continuous disk space, causing many pieces of space on the floppy disk, floppy disk read and write operations affect the performance, serious when can cause write fault.To solve the above problems, you can use the COPY command to copy the entire disk, and then keep the files on the new site for continuous storage.23. copies multiple files into multiple floppy disks continuously.First, set the document features of each file with the ATTRIB command:ATTRIBA *.*/SThen use the XCOPY command to insert the new disk after the floppy disk is full, and decide which documents need to be copied and which ones are not copied according to the document characteristics.XCOPY A: /S/M/W.24. use the TYPE command to copy the fileCopy files usually use the COPY command or the XCOPY command. In fact, TYPE also has the use of "copy" files:TYPE filenamel>filename2This method is very effective for copying hidden files. For example: TYPE IO.SYS>A: IO.SYS25. displays files or directories in lowercaseDIR/L26. displays file name and subdirectory name, no display file size and generation time and other informationDIR/B27. make DIR always display the file alphabetically in alphabetical order of the file nameAdd the following command in AUTOEXEC BAT:SET DIRCMD=/OThe file directory created on the 28. column of the dayIf you wish to know how many documents were set up on that day (e.g., October 21, 1996), you can use the following commands to list:DIR|FIND "10211996""29. what would you do if you don't want people to use the DIR command to do directory file listings?Method one: DOSKEY, DIR=You, can, not, use, DIR!Method two: add command line in AUTOEXEC BAT: SET DIRCMD=0The function of this command is to display "File not found" only when the file is displayed with the DIR command. It can play a temporary security role. If you want to display files and directories, specify only specific file names or paths.Method three: SET DIRCMD=DIR>NULWhen the command is executed, then using the DIR command, the output of no file information is also confusing.30. out of all the files in the directory CHKDSK/V|MORE31. how to find files on a disk with multiple directoriesMethod one: CHKDSK/V|FIND file name, in which the file name must be capitalized.Method two: DIR/S file name32. real-time control of printer or newline pageECHO>PRN (wrap)ECHO^L>PRN (page)33. causes the computer to make a sound at the DOS command lineECHO ^GAutomatic response to 34.DOS command questionsFor example:ECHO, Y|DEL, C:ECHO, N|CHKDSK, C: /F35. make the ECHO command display blank linesWhen the ECHO command is followed directly by the space character, the ECHO will display the current information echo state (ON or OFF) instead of returning the blank line directly to the screen. In fact, some of the very simple command formats below can make the ECHO command display blank lines:ECHO ECHO, ECHO ECHO;ECHO[ECHO] ECHO/ ECHO\par36. feed the carriage return to the interactive DOS command with the ECHO commandFor example:ECHO|DATE|FIND "Current date"ECHO|TIME|FIND "Current time"This technique can be used in AUTOEXEC.BAT so that the current date and time information is displayed directly after each boot, so you can continue without pressing the enter key.Thirty-sevenBoot time black boxSometimes it is necessary to record the date and time of each computer use so as to strengthen the management of the machine. You can take advantage of the above technique by adding the following command in the AUTOEXEC.BAT file:ECHO|DATE>>ABCECHO|TIME>>ABCThus, when each computer is started, the date and time are automatically recorded in the file ABC, and the command TYPE ABC is used to view the previous boot date and time.38. automatic statistical command or file running timeHere is a timer TIMETEST.BAT that implements the automatic statistics command or the running time of the file:@ECHO OFFTIME 0COMMAND /C%1%2%3%4ECHO%1%2%3%4 run time is:ECHO|TIME|FIND "time is"@ECHO ONFor example, test the AUTOEXEC.BAT run time:C>TIMETEST AUTOEXEC.BAT in my family.AUTOEXEC.BAT run time is:Current time is 0: 00: 0349Note that AUTOEXEC.BAT has been running for 3.49 seconds. 39. skip or step through the CONFIG.SYS and AUTOEXEC.BAT filesMethod 1: start the computer, the screen appears Starting MS-DOS... When you press the F5 key or the SHIFT key, DOS will skip the CONFIG.SYS and AUTOEXEC.BAT two files and start the machine with the basic environment configuration of the system running.Method two: when the above prompt appears, press the F8 key and answer Y or N one by one through the keyboard to select theexecution command.Method three: add the "number" to the command in the CONFIG.SYS file. Such as DOS =UMS, so that when you execute the command, the selection prompt for [Y, N], lets you choose whether to load the command.40. can you save the DOS startup by waiting for two seconds by pressing F8 or F5?Can. The method is to add the statement SWITCHES=/F to the head of the CONFIG SYS file, and then the same function can be implemented before the Starting MS-DOS appears... Press F8 or F5 when you press.41. single step batch processing fileCOMMAND/Y/C (batch file name)/Y told the DOS switch in the implementation of each line suspended, suggesting that [Y, N] asks the user whether to perform?.42. quickly get help information for the DOS commandMethod one: FAST HELP command nameMethod two: command name /?Method three: command name /H43. easily change the subdirectory nameThe following MOVE command can rename the C: directory to C::MOVE C: C:44. when to move files using the MOVE command?The biggest characteristic of the MOVE command can be listed multiple to move the files in a command line file "," are available. For example, all executable files are moved into the directory in the current directory:MOVE, *.COM, *.EXE, *.BAT45. use the MOVE command to encrypt or decrypt the sub directories simplyEncryption: if the C: Directory uses half Chinese characters for simple encryption, you can execute the command:MOVE C: C (half Chinese characters)Decryption: instead, you can use the MOVE command to combine wildcards * or to change the non recognizable directory name to other names to achieve the purpose of decryption.46. quick access to deep subdirectoriesThe SUBST command can be used to set the drive to replace the second directory path identifier, deep into the deep, thesecond catalog is very convenient. For example, the following command simulates the subdirectory C: M disk:SUBST M: C:Thus, in any directory, you can enter the PRG subdirectory as long as you change the current drive to M.How to cancel the 47. SUBST set the letter?For example, to cancel the disk M in the above example, if the executive order SUBST M: /D.48. the MD command that creates and enters the new directoryThe MD command in DOS can only build subdirectories,When you have finished building it, you can enter it with the CD commandDOSKEY MD=MD $1 $T CD $1The MD command is redefined, and after using MD, the directory is established and the directory is entered synchronously.49. exclude method file listThe DIR command supports wildcards and * * * instead of other characters, but does not provide the ability to exclude the corresponding characters, while using the /V parameter in the FIND command, the list of excluded methods can be easilyimplemented. The following command lists all files other than.BAK files and subdirectories:DIR|FIND/V "BAK", "|FIND/V", "<DIR>""The difference between "50.>" and ""DIR>DIRLIST: if the DIRLIST file exists, the contents of the file will be cleared and new contents entered in the file.DIR>>DIRLIST: if the DIRLIST file exists, append the output data to the end of the file.When the DIRLIST file does not exist, the two are equivalent.51. quick add search pathPATH=%PATH%;%152., the data files and the text file generated by the word processing program can not be executable files, the establishment of automatic search path.The APPEND command can add a set of specified directories to the logical extension of the current directory, thus opening the set of files without specifying the path. After APPEND, you can put more than one directory, so long as it is separated by "...", for example:APPEND, C:: C =: C =: C;53. hide the directory nameBecause the ATTRIB command changes the properties of a directory, the command can be used to hide the directory name. For example, hide the directory C: hide:C: ATTRIBH54. quick delete directory treeWith the DELTREE command, you can quickly delete the specified directory, regardless of the number of subdirectories and directories in the directory, and what attributes are included in the file. For example: DELTREE C:55. prevent accidentally deleting filesThe DEL command is a dangerous command that can be redefined by using the following command to make sure that there is a confirmation when deleting the file:DOSKEY DEL=DEL $1/P56. if you delete some files by mistake, what can you do to restore them in time?The UNDELETE command can be used to restore deleted files. The following commands can recover deleted files from the current directory:UNDELETE *.*/ALLThe first character of the file name returned by this command becomes "REN" and can be changed to the original filename by the "" "" "" "" "command.57., the deletion of multiple file names, no common features of the document, due to difficult to use wildcards, can only be deleted one by one, more troublesome. Is there any other convenient way?Yes。
