touch - Create empty file/update timestamp

touch file1 file2: Create file1 and file2 files. Update timestamp if files exist

touch file{1..10}.txt: Creates 10 files

touch dir/{a,b}: Creates files dir/a and dir/b

touch -a file: Change access time of foo

touch -m file: Change modification time of foo

touch -r file1 file2: Uses times from file1 instead of current time

touch -t 202601012310 file: Changes foo timestamp to 1 Jan 2026 23 10

find . -exec touch {} \;: Update timestamps recursively