Detailed explanation of linux touch command

Detailed explanation of linux touch command:

1. Command function:

Time stamp for creating files and modifying files or directories

2. Command syntax:

touch [Option] [File name or directory name]

3. Command parameters:

• -a Only modify the file Access time.

• -c or --no-create Do not create files that do not exist.

• -d uses the specified date and time instead of the current time

• -m refers to modifying the Modify time without modifying it access (access) time

• -r file Use the timestamp of the specified file file to update the timestamp of the file (access, modify)

• Note: access indicates the time when the file was last accessed (only accessed, not changed)

• modify indicates the time when the file was last modified

• change indicates the time when the file attributes were last changed, including permissions, size, attributes, etc.

• -t Modifies the time to the date specified by the parameter, such as: 07081556 represents July 8, 15:56

4. Usage example:

Create a file that does not exist, such as creating it in the /data directory:

Modify the access time of the file, such as modifying the access time of westoslinux in the above figure

Modify the modify time of the file, such as modifying / Modify time of data/westoslinux file

Use the specified time to change the access or modify time of the file or directory, for example, modify the access time of the file above to 2012-07-15 08:30:30, to modify the modify timestamp, just change the parameter a to m.

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