Batch Processing instance: File Operations

01 _ Modify file names in batches. bat

 
: ________________________________________________________ Modifying file names in batches @ echo offecho start to change file name set extension =. RAR: ____________________________________________________/A is used to identify the variable set/a sum = 0for % m in (*) Do (if not "% m" = "batchrename. bat "(: ________________________________________________________ Ren command to modify the file name Ren % m % extension % set/a sum = sum + 1) ECHO file renamed, A total of % sum % files were renamed! Set sum = set extension =
 

This command is obviously problematic. I will try to modify it later. Here I will write a note: the name will be repeated if no judgment is made during renaming.

02 _ create 100 files from 0 to 99

 
@ Echo offecho: The file is being created: Echo. empty output line, which is equivalent to entering a carriage return echo. echo. :/L indicates that the for loop can only be in the specified range for/L % N in (, 99) Do (::>> redirect symbol echo test document >> test1_1_n.txt) ECHO file created
 

03 _ automatic cycleProgram

@ Echo offecho: testing whether the host can be pinged to 18.18.18.34 ....: Again: ______________________________________________> NUL indicates that the ping command output is sent to an empty device and not displayed on the screen. Ping 18.18.18.34> NUL :: ______________________________________________ equ determine whether two values are equal if not % errorlevel % equ 0 goto againstart "can communicate with the host normally" Echo can now successfully ping the host 18.18.18.34
 

04 _ display complete batch path information

 
@ Echo offecho the complete path of the % 0 file currently running is: ____________________________________ % 0 indicates the batch file itself, and % ~ Dp0 indicates the path information on the file echo % ~ Dp0echo. Echo.
 

05 _ automatically rename the file name to the current system date

@ Echo off: ___________________________________________ % 1 is the file to be renamed by the command line. If not exist % 1 (echo command usage is as follows ::: _______________________________________ % 0 indicates the batch processing NAME echo % 0 filenameecho filename: indicates the file name to be modified. Echo. Echo. Goto end): _______________________________________ % ~ X1 indicates the extension of the % 1 file ,~ X indicates the variable extension set extension = % ~ X1 @ echo on: _______________________________________ tokens is used to define the number of for loop variables, delims is used to define the separator for/F "tokens = 1-3 delims =/-" % A in ('date/t ') do set date = % A % B % C: _______________________________________ here it is particularly stated that the date value should have been changed, but it has not changed here, therefore, the error "Ren % 1% date % extension % echo" is reported. ECHO file % 1 has been renamed to % date % extension % set extension = set date =: End