1. add the disk on vmware
2. Scan the disk
[root@ashok ~]# echo "- - -"> /sys/class/scsi_host/host0/scan
[root@ashok ~]# echo "- - -"> /sys/class/scsi_host/host1/scan
[root@ashok ~]# echo "- - -"> /sys/class/scsi_host/host2/scan
[root@ashok ~]# fdisk -l
[root@ashok ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000bdad6
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 41943039 20458496 8e Linux LVM
Disk /dev/mapper/centos-root: 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 3221 MB, 3221225472 bytes, 6291456 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-home: 6983 MB, 6983516160 bytes, 13639680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[root@ashok ~]# fdisk /dev/sdb
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p):
Using default response p
Partition number (2-4, default 2):
First sector (411648-4194303, default 411648):
Using default value 411648
Last sector, +sectors or +size{K,M,G} (411648-4194303, default 4194303): +200M
Partition 2 of type Linux and of size 200 MiB is set
Command (m for help): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3):
First sector (821248-4194303, default 821248):
Using default value 821248
Last sector, +sectors or +size{K,M,G} (821248-4194303, default 4194303): +200M
Partition 3 of type Linux and of size 200 MiB is set
Command (m for help): p
Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc3e9fc2d
Device Boot Start End Blocks Id System
/dev/sdb1 2048 411647 204800 83 Linux
/dev/sdb2 411648 821247 204800 83 Linux
/dev/sdb3 821248 1230847 204800 83 Linux
Command (m for help): n
Partition type:
p primary (3 primary, 0 extended, 1 free)
e extended
Select (default e):
Using default response e
Selected partition 4
First sector (1230848-4194303, default 1230848):
Using default value 1230848
Last sector, +sectors or +size{K,M,G} (1230848-4194303, default 4194303):
Using default value 4194303
Partition 4 of type Extended and of size 1.4 GiB is set
Command (m for help): p
Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc3e9fc2d
Device Boot Start End Blocks Id System
/dev/sdb1 2048 411647 204800 83 Linux
/dev/sdb2 411648 821247 204800 83 Linux
/dev/sdb3 821248 1230847 204800 83 Linux
/dev/sdb4 1230848 4194303 1481728 5 Extended
Command (m for help): n
All primary partitions are in use
Adding logical partition 5
First sector (1232896-4194303, default 1232896):
Using default value 1232896
Last sector, +sectors or +size{K,M,G} (1232896-4194303, default 4194303): +200M
Partition 5 of type Linux and of size 200 MiB is set
Command (m for help): n
All primary partitions are in use
Adding logical partition 6
First sector (1644544-4194303, default 1644544):
Using default value 1644544
Last sector, +sectors or +size{K,M,G} (1644544-4194303, default 4194303): +200M
Partition 6 of type Linux and of size 200 MiB is set
Command (m for help): p
Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc3e9fc2d
Device Boot Start End Blocks Id System
/dev/sdb1 2048 411647 204800 83 Linux
/dev/sdb2 411648 821247 204800 83 Linux
/dev/sdb3 821248 1230847 204800 83 Linux
/dev/sdb4 1230848 4194303 1481728 5 Extended
/dev/sdb5 1232896 1642495 204800 83 Linux
/dev/sdb6 1644544 2054143 204800 83 Linux
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@ashok ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000bdad6
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 41943039 20458496 8e Linux LVM
Disk /dev/mapper/centos-root: 10.7 GB, 10737418240 bytes, 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 3221 MB, 3221225472 bytes, 6291456 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-home: 6983 MB, 6983516160 bytes, 13639680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdb: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc3e9fc2d
Device Boot Start End Blocks Id System
/dev/sdb1 2048 411647 204800 83 Linux
/dev/sdb2 411648 821247 204800 83 Linux
/dev/sdb3 821248 1230847 204800 83 Linux
/dev/sdb4 1230848 4194303 1481728 5 Extended
/dev/sdb5 1232896 1642495 204800 83 Linux
/dev/sdb6 1644544 2054143 204800 83 Linux
[root@ashok ~]# mkf
mkfifo mkfontscale mkfs.btrfs mkfs.ext2 mkfs.ext4 mkfs.minix mkfs.vfat
mkfontdir mkfs mkfs.cramfs mkfs.ext3 mkfs.fat mkfs.msdos mkfs.xfs
[root@ashok ~]# mkfs
mkfs mkfs.cramfs mkfs.ext3 mkfs.fat mkfs.msdos mkfs.xfs
mkfs.btrfs mkfs.ext2 mkfs.ext4 mkfs.minix mkfs.vfat
[root@ashok ~]# mkfs.xfs /dev/sdb1
meta-data=/dev/sdb1 isize=256 agcount=4, agsize=12800 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=51200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal log bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@ashok ~]# blkid /dev/sdb1
/dev/sdb1: UUID="1f25b100-13bc-4f91-957a-4eea740bc9f1" TYPE="xfs"
[root@ashok ~]# mount UUID="1f25b100-13bc-4f91-957a-4eea740bc9f1" /mnt
[root@ashok ~]# cd /mnt
[root@ashok mnt]# ls
[root@ashok mnt]# mkdir newdir
[root@ashok mnt]# ls
newdir
[root@ashok mnt]# touch this is so cool and I am liking it
[root@ashok mnt]# ls -ltr
total 0
drwxr-xr-x. 2 root root 6 Jan 3 17:23 newdir
-rw-r--r--. 1 root root 0 Jan 3 17:23 this
-rw-r--r--. 1 root root 0 Jan 3 17:23 is
-rw-r--r--. 1 root root 0 Jan 3 17:23 so
-rw-r--r--. 1 root root 0 Jan 3 17:23 cool
-rw-r--r--. 1 root root 0 Jan 3 17:23 and
-rw-r--r--. 1 root root 0 Jan 3 17:23 liking
-rw-r--r--. 1 root root 0 Jan 3 17:23 I
-rw-r--r--. 1 root root 0 Jan 3 17:23 am
-rw-r--r--. 1 root root 0 Jan 3 17:23 it
[root@ashok mnt]# pwd
/mnt
[root@ashok mnt]# cd /
[root@ashok /]# df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 197M 11M 187M 6% /mnt
[root@ashok /]# umount /mnt
[root@ashok /]# df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 10G 3.7G 6.4G 37% /
[root@ashok /]# cd /mnt
[root@ashok mnt]# ls
[root@ashok mnt]# ls -l
total 0
[root@ashok mnt]# cd
[root@ashok ~]# mount UUID="1f25b100-13bc-4f91-957a-4eea740bc9f1" /mnt
[root@ashok ~]# cd /mnt
[root@ashok mnt]# ls
am and cool I is it liking newdir so this
[root@ashok mnt]#
894 find /home -user ashok
895 find /home -group ashok
896 grep ashok /etc/group
897 find /home -group kamal
898 find /home -group devi
899 find / -user kamal -group devi
900 find /home -perm -777
901 find /home -perm -222
902 ls -l /home/ashok/n1234 /home/ashok/aaaaa /home/andy/a
903 find /home -perm -111
904 ls -l /home/andy/.mozilla/extensions
905 ls -ld /home/andy/.mozilla/extensions
906 find /home -perm -777
907 ls -l /home/ashok/.mozilla/firefox/qpi9jfhh.default/lock
908 p
909 mkdir /home/abc
910 chmod 777 /home/abc
911 find /home -perm -777
912 pwd
913 find /home -size 2M
914 find /home -size 2M -exec ls -l {} \;
915 find /home -size 2M -exec ls -lh {} \;
916 grep 1000 /etc/group
917 groupadd -g 1000 ashok1
918 find /home -size 2M -exec ls -lh {} \;
919 groupdel ashok1
920 find /home -size 2M -exec ls -lh {} \;
921 find /home -mtime -130
922 find /home -mmin -130
923 ls -l
924 find . -type f -links +1
925 pwd
926 df -l
927 fdisk -l
928 fdisk
929 fdisk -l
930 lshw
931 echo "- - -"> /sys/class/scsi_host/host0/scan
932 echo "- - -"> /sys/class/scsi_host/host1/scan
933 echo "- - -"> /sys/class/scsi_host/host2/scan
934 fdisk -l
935 fdisk
936 fdisk -cu /dev/sdb
937 fdisk /dev/sdb
938 fdisk -l
939 mkfs.xfs /dev/sdb1
940 blkid /dev/sdb1
941 mount UUID="1f25b100-13bc-4f91-957a-4eea740bc9f1" /mnt
942 cd /mnt
943 ls
944 mkdir newdir
945 ls
946 touch this is so cool and I am liking it
947 ls -ltr
948 pwd
949 cd /
950 df -h /mnt
951 umount /mnt
952 df -h /mnt
953 cd /mnt
954 ls
955 ls -l
956 cd
957 mount UUID="1f25b100-13bc-4f91-957a-4eea740bc9f1" /mnt
958 cd /mnt
959 ls
960 history
[root@ashok mnt]#
3. create a partition
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