Shulou(Shulou.com)06/02 Report--

1 Delete folder CVM

De > rm-rf fileNamede >

-Delete a folder instance:

Rm-rf / var/log/httpd/access

The / var/log/httpd/access directory and all files and folders under it will be deleted

Need to be reminded: you must be very careful when using this rm-rf. Linux does not have a Recycle Bin.

2 delete files

De > rm-f fileNamede >

Be careful when using rm-rf. Linux does not have a Recycle Bin.

Linux add File command

Create a directory: mkdir (make directories)

Function description: create a directory

Grammar: mkdir [- p] [--help] [--version] [- m] [directory name]

Additional note: mkdir can establish a directory and set the permissions of the directory at the same time.

Parameters:

-m or-mode sets the permissions of the directory at the same time it establishes the directory.

-p or-parents if the upper directory of the directory to be created has not been created yet, the upper directory will be created as well.

Example: mkdir test

Create a file touch

Function description: change the file or directory time. ?

Grammar: touch [- acfm] [- d] [- r] [- t] [--help] [--version] [file or directory.] Or touch [- acfm] [--help] [--version] [date and time] [file or directory.]

Note: use the touch directive to change the date and time of a file or directory, including access time and change time.

Parameters:

-an or-time=atime or-time=access or-time=use only changes the access time.

-c or-no-create does not create any files.

-d uses the specified date time instead of the current time.

-f this parameter is ignored and not processed, and is only responsible for resolving the compatibility issue of the BSD version of the touch directive.

-m or-time=mtime or-time=modify only changes the time of change.

-r set the date and time of the specified file or directory to the same date and time as the reference file or directory.

-t uses the specified date time instead of the current time.

Example: touch test.txt (Note: there is no file suffix under Linux to distinguish file types, system file types are only executable files and non-executable files)

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