touch

Question 1

touch

Answer 1

Update the access and modification times of each FILE to the current time.

Question 2

touch

• a
• c
• d
• h
• m
• r

Answer 2

• a, Change only the access time.
• c, –no-create, Do not create any files.
• d, –date=STRING, Parse STRING and use it instead of current time.
• h, –no-deference, Affect each symbolic link instead of any referenced file.
• m, Change only the modification time.
• r, –reference=FILE, Use this file’s times instead of the current time.

Question 3

touch -t STAMP

–time=WORD

Answer 3

-t STAMP, Use [[CC]YY]MMDDhhmm[.ss] instead of current time.

–time=WORD, change specified time:

WORD is access, atime, or use equivalent to -a

WORD is modify or mtime: equivalent to -m