The devpts file system is a virtual file system in Linux used to provide access to the terminal’s pseudo-terminal master-slave pairs. To mount the devpts file system on /dev/pts, use the following command:
mount -t devpts devpts /dev/pts
This will mount the devpts file system on /dev/pts so that you can use pseudo-terminals in your system.
If you want to make the mount persistent across reboots, you can add the following line to the /etc/fstab file:
devpts /dev/pts devpts gid=5,mode=620 0 0
In this line, gid=5 sets the group ownership of the /dev/pts directory to tty, and mode=620 sets the permissions for the directory to rw-rw----.