Updates a file's modification time
touch [options] file-list
The touch utility updates the time a file was last accessed and the time it was last modified and also allows you to specify these times on the command line. This utility is frequently used with make.
The file-list contains the pathnames of the files touch is to update.
When you do not specify the -c option, touch creates files that do not already exist. If touch is used without the -d or -t options, touch uses the current date and time.
-d datestring Updates times with the date specified by datestring. Most familiar formats are permitted for datestring. Components of the date and time not included in datestring are assumed to be the current ...