ln

The ln command creates symbolic links ( symlink for short or soft links) and hard links in Linux. This utility comes pre-installed on every Linux distro.

Example of creating a soft link:

sudo ln -s /opt/cleanup.sh  /bin/cleanup

Useful ln commands and options

• ln example.txt ~/example.txt - creates a hard link to a file example.txt
• ln -sf /opt/cleanup.sh /bin/cleanup - remove the existing destination file if it already exists and create a new link.

rm

The rm command is a Linux built-in used to delete files and directories.

Simply typing the rm command followed by a filename will permanently delete the file from the system thereby freeing up some disk space.

Example

rm hello.txt

Useful options

• rm -f - forcefully delete a write-protected file.
• rm -rf - recursively delete a directory and all of its contents without confirmation.
• rm -i - prompts the user to confirm the deletion of files.
• rm -d - deletes empty directories only. Same as rmdir command.

zip

The zip command is used to compress one or more multiple files into a single file with the .zip file extension.

Example: