Linux下touch命令的用法

Touch Command Options

a, change the access time only

-c, if the file does not exist, do not create it

-d, update the access and modification times

-m, change the modification time only

-r, use the access and modification times of file

-t, creates a file using a specified time

1.创建一个新的空文件

# touch sheena

2.创建多个文件

# touch sheena meena leena

3.只修改access time为现在的时间，-a

# touch -a leena

4.只修改modification time为现在的时间，-m

# touch -m leena

5.如果文件不存在，避免创建新文件，-c

# touch -c leena

6.同时精确设定access and modification times，-t

# touch -c -t YYDDHHMM leena

sets the access and modification date and time to a file leena as 17:30 (17:30 p.m.) December 10 of the current year (2012).

# touch -c -t 12101730 leena

7.使用另一个指定文档的access and modifications times设定文件的时间戳，-r

# touch -r leena meena

8.创建一个新文件并指定精确的access and modifications times

# touch -t YYMMDDHHMM.SS tecmint

# touch -t 201212101830.55 tecmint