1、創建一個10G的文件系統，類型為ext4，要求開機可自動掛載至單獨數據/data目錄；

[[email?protected] /]# cat /proc/partitions

major minor ?#blocks ?name

8 ? ? ? ?0 ? 52428800 sda

8 ? ? ? ?1 ? ? 204800 sda1

8 ? ? ? ?2 ? ?4096000 sda2

8 ? ? ? ?3 ? 48126976 sda3

8 ? ? ? 16 ? 10485760 sdb

[[email?protected] /]# fdisk /devsdb

Unable to open /devsdb

[[email?protected] /]# fdisk /dev/sdb

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel with disk identifier 0x68f6d495.

Changes will remain in memory only, until you decide to write them.

After that, of course, the previous content won‘t be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It‘s strongly recommended to

switch off the mode (command ‘c‘) and change display units to

sectors (command ‘u‘).

Command (m for help): p

Disk /dev/sdb: 10.7 GB, 10737418240 bytes

255 heads, 63 sectors/track, 1305 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x68f6d495

Device Boot ? ? ?Start ? ? ? ? End ? ? ?Blocks ? Id ?System

Command (m for help): n

Command action

e ? extended

p ? primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-1305, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-1305, default 1305):

Using default value 1305

Command (m for help): p

Disk /dev/sdb: 10.7 GB, 10737418240 bytes

255 heads, 63 sectors/track, 1305 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x68f6d495

Device Boot ? ? ?Start ? ? ? ? End ? ? ?Blocks ? Id ?System

/dev/sdb1 ? ? ? ? ? ? ? 1 ? ? ? ?1305 ? ?10482381 ? 83 ?Linux

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[[email?protected] /]# mkfs.ext4 /dev/sdb

mke2fs 1.41.12 (17-May-2010)

/dev/sdb is entire device, not just one partition!

Proceed anyway? (y,n) y

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

655360 inodes, 2621440 blocks

131072 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=2684354560

80 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632

Writing inode tables: done

Creating journal (32768 blocks):

done

Writing superblocks and filesystem accounting information:

done

This filesystem will be automatically checked every 38 mounts or

180 days, whichever comes first. ?Use tune2fs -c or -i to override.

[[email?protected] /]# cat /proc/partitions

major minor ?#blocks ?name

8 ? ? ? ?0 ? 52428800 sda

8 ? ? ? ?1 ? ? 204800 sda1

8 ? ? ? ?2 ? ?4096000 sda2

8 ? ? ? ?3 ? 48126976 sda3

8 ? ? ? 16 ? 10485760 sdb

8 ? ? ? 17 ? 10482381 sdb1

[[email?protected] /]# mkdir /mydata1

[[email?protected] /]# mount /dev/sdb1 /mydata1/

mount: you must specify the filesystem type

[[email?protected] /]# mount /dev/sdb /mydata1/

[[email?protected] /]# cd /mydata1/

lost+found

lost+found

[[email?protected] mydata1]# cd lost+found/

[[email?protected] lost+found]# cd ..

lost+found

Filesystem ? ? 1K-blocks ? ?Used Available Use% Mounted on

/dev/sda3 ? ? ? 47371632 1628584 ?43336700 ? 4% /

tmpfs ? ? ? ? ? ? 510148 ? ? ? 0 ? ?510148 ? 0% /dev/shm

/dev/sda1 ? ? ? ? 198337 ? 26862 ? ?161235 ?15% /boot

/dev/sdb ? ? ? ?10321208 ?154100 ? 9642820 ? 2% /mydata1

[[email?protected] mydata1]# vi /etc/fstab

[[email?protected] mydata1]# cat /etc/fstab

#

# /etc/fstab

# Created by anaconda on Wed Dec ?9 01:17:20 2015

#

# Accessible filesystems, by reference, are maintained under ‘/dev/disk‘

# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

#

UUID=1a36e597-b5e2-4b66-9250-2e4af5eecf3f / ? ? ? ? ? ? ? ? ? ? ? ext4 ? ?defaults ? ? ? ?1 1

UUID=133f8aff-57bf-41d5-8570-1d40cae3d13b /boot ? ? ? ? ? ? ? ? ? ext4 ? ?defaults ? ? ? ?1 2

UUID=dadabadb-1467-4921-88d1-47ba1eddbf71 swap ? ? ? ? ? ? ? ? ? ?swap ? ?defaults ? ? ? ?0 0

tmpfs ? ? ? ? ? ? ? ? ? /dev/shm ? ? ? ? ? ? ? ?tmpfs ? defaults ? ? ? ?0 0

devpts ? ? ? ? ? ? ? ? ?/dev/pts ? ? ? ? ? ? ? ?devpts ?gid=5,mode=620 ?0 0

sysfs ? ? ? ? ? ? ? ? ? /sys ? ? ? ? ? ? ? ? ? ?sysfs ? defaults ? ? ? ?0 0

proc ? ? ? ? ? ? ? ? ? ?/proc ? ? ? ? ? ? ? ? ? proc ? ?defaults ? ? ? ?0 0

/dev/sdb/mydata1ext4defaults0 0

2、顯示`netstat -tan`命令結果中以‘LISTEN’后跟0個、1個或者多個空白字符結尾的行；

[[email?protected] mydata1]# netstat -tan |grep ‘LISTEN[ ]*$‘

tcp ? ? ? ?0 ? ? ?0 127.0.0.1:25 ? ? ? ? ? ? ? ?0.0.0.0:* ? ? ? ? ? ? ? ? ? LISTEN

tcp ? ? ? ?0 ? ? ?0 0.0.0.0:1433 ? ? ? ? ? ? ? ?0.0.0.0:* ? ? ? ? ? ? ? ? ? LISTEN

tcp ? ? ? ?0 ? ? ?0 ::1:25 ? ? ? ? ? ? ? ? ? ? ?:::* ? ? ? ? ? ? ? ? ? ? ? ?LISTEN

tcp ? ? ? ?0 ? ? ?0 :::1433 ? ? ? ? ? ? ? ? ? ? :::* ? ? ? ? ? ? ? ? ? ? ? ?LISTEN

完蛋了，換了好幾瀏覽器都報405錯誤，我都無語了。我改用txt文檔上次吧

原文：http://725689.blog.51cto.com/715689/1729273

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