- date command
date
- calender command
cal 1 2020
- go to previous working directory
cd -
- list the file based on modification date.
ls -t
- rmdir dir1 dir2 dir3 -> remove only empty directory
- rm file1 file2 file3 -. remove files
- rm -R dir1 -> delete dir1 recursively
- rm -i file -> will ask to you to remove it
- rm -Ri dir1 -> ineractively ask you to delete the stuff inside the dir1
rm -f file1 file2 file3
rm -Rv dir1 - will show verbose -> r is caseinsensitive
cp file1 file2 dir1 -> copy both file1 and file2
cp -R dir1 dir2 -> copy recursively dir1 to dir2