Rhce exercise set rhel7

1. Password cracking:

   E --> linux16 Rd. break Ctrl + X --> Mount-O remount, RW/sysroot --> chroot/sysroot --> echo flectrag | passwd -- stdin root --> touch /. autorelabel --> Ctrl + d --> Reboot

2. Modify hostname and IP address

   Nm-connector-Editor

   Ipaddr0 --> prefix0 --> gateway0 --> dns1 --> domain

   Chattr + I/etc/resolv. conf

   Hostnamectl set-hostname example.com

3. Yum. Repos. d/RHEL. Repo

   [Yumserver]

   Name = yumserver

   Baseurl = http :///

   Gpgcheck = 0

   Enabled = 1

4. LVM

   Ext4: Increase lvextend-l 300 m/dev/vg1/LV1 resize2fs/dev/vg1/LV1

   XFS: xfs_growfs/mountpoint

   Reduce umount/dev/vg1/LV1 e2fsck-F/dev/vg1/LV1 resize2fs/dev/vg1/LV1 100 m

   Lvreduce-L 100 m/dev/vg1/LV1 Mount-

5. Resize2fs/dev/vg1/LV1

6. Groupadd adminuser

   Useradd Natasha-G adminuser

   Useradd Harry-G adminuser

   Useradd Sarah-S/sbin/nologinb

   Passwd Natasha Harry Sarah

7. CP/etc/fstab/var/tmpfsta

   Setfacl-m u: Natasha: RW/var/tmp/fstab

   Setfacl-m u: Harry:-/var/tmp/fstab

8. Crontab-e-u Natasha

   23 14 ***/bin/ECHO Hiya

9. Mkdir/home/admins

   Chgrp adminuser/home/admins

   Chmod 2770/home/admins

10. FTP get rpm vi/etc/grub. conf modify default startup Kernel

11. Yum install authconfig-GTK

12. Vim/etc/chrony. conf

    Systemctl restart chronyd. Service (enable)

13. Useradd-u 1234 Alex

14. Fdisk/dev/vdb n --> E; fdisk/dev/vdb n --> L --> E --> + 500 m --> E --> T --> 82 --> W

    Part-A/dev/vdb

    Mkswap/dev/vdb6

    UUID

    Vim/etc/fstab

    UUID swap defaults 0 0

    Swapon-

15. Mkdir/root/findfiles

    Find/-user IRA-exec CP {}/root/findfiles \;

16. Grep 'semisc'/usr/share/dict/words/root/wordlist

17. 
    

This article is from the "Blood Java" blog, please be sure to keep this source http://sunrain990.blog.51cto.com/3700585/1564843

Rhce exercise set rhel7