5 Useful Linux Touch command

1) Create an empty file
Below will create  0 bytes file called 'test123'. It will change the modification/access timestamp.

#touch test123

Touch -c avoid creating non-existence file.

2)Create new file's timestamp

#touch -t 05070915 test123

3)Change modification time

# touch -m test123

4) Change access time

# touch -a test123

5)Copy  other file's timestamp.

#touch try123 -r test123