Create and configure file systems

Context RHCE exam objective example commands:

Create and configure file systems

Certainly! Here are some example commands related to the RHCE exam objective of creating and configuring file systems:

1. Create and Format a New File System:

• Create an ext4 file system on /dev/sdb1:

  mkfs.ext4 /dev/sdb1

• Create an XFS file system on /dev/sdc1:

  mkfs.xfs /dev/sdc1

2. Configure File System Mount Points:

• Edit the /etc/fstab file to automatically mount a file system at boot time:
  echo "/dev/sdb1 /data ext4 defaults 0 0" >> /etc/fstab

3. Configure Disk Quotas:

• Enable disk quotas on a file system:

  quotacheck -cug /home

• Set a user quota of 1GB for a specific user:

  setquota -u username 1048576 1048576 0 0 /home

4. Implement Disk Encryption:

• Encrypt a file system using LUKS:

  cryptsetup luksFormat /dev/sdb1

• Open an encrypted file system:

  cryptsetup luksOpen /dev/sdb1 myencryptedfs

5. Configure Network File System (NFS) Share:

• Export a directory for NFS sharing:
  echo "/shared_data *(rw,sync,no_root_squash)" >> /etc/exports exportfs -a

6. Utilize Logical Volume Management (LVM):

• Create an LVM logical volume:

  lvcreate -L 100G -n lv_app vg_data

• Format an LVM logical volume with ext4:

  mkfs.ext4 /dev/mapper/vg_data-lv_app

• Mount an LVM logical volume:

  mount /dev/mapper/vg_data-lv_app /app

Please note that these are example commands, and the actual usage may depend on your specific system configuration and requirements. It is important to refer to the official Red Hat documentation and exam guidelines to ensure you have the correct syntax and options for each command.