Http://cache.baiducontent.com/C? M = listen P = 9770dd0c95904ead08e2977c0a7a8a newp = Comment User = Baidu fm = SC query = % D7 % D4 % D3 % C9 % CF % D6 % BD % F0 % C1 % F7 % BC % C6 % CB % E3 qid = p1 = 3
What does Buffett use for valuation?Free cash flow!
Therefore, you only need to solve the problemFree cash flowYou can easily use the Buffett-style valuation method!
However, the current financial report is not ready-madeFree cash flowData, which has become the target of many value inv
We all know the essential differences between IPv6 and IPv4 protocol networks. So what are the differences between the two in the two-way session communication process? The following describes the content in detail. The NAT-PT can only be used for applications that initiate a session by a terminal in the Ipv6 network, and the NAT-PT cannot be implemented if an application needs to initiate a session by a terminal in the IPv4 protocol network, because the terminal in the IPv4 protocol network can
Vif0.0: receivedpacketwithownaddressassourceaddress system: Centos5.x kernel: 2.6.18.x command line exception information: vif0.0: receivedpacketwithownaddressassourceaddress you can also view the system Email in dmesg... vif0.0: received packet with own address as source address system: Centos5.x kernel: 2.6.18.x command line exception information: vif0.0: stored Ed packet with own address as source address. you can also view the system information in dmesg as the machine cannot be connected to
Vif0.0: received packet with own address as source address system: Centos5.x kernel: 2.6.18.x command line exception information: vif0.0: stored ed packet with own address as source address. You can also view the system information in dmesg as the machine cannot be connected to the Internet. # view the network configuration $/sbin/ifconfig eth0 Link encap: Ethernet HWaddr FE: FF: FF: FF inet addr: 172.16.1.11 Bcast: 172.16.1.255 Mask: 255.255.255.0 inet6 addr: fe80: 220: aff: fe10:
the unicode of the Slash to the end of the saved string in the stack7517FCD2 pop ecx7517FCD3 inc esi // calculate the length of the slash into the temporary string7517FCD4 pop ecx7517FCD5 mov eax, [ebp + arg_4] // retrieve string 1, similar to checking whether the first character of string 1 is // slash or backslash7517FCD8 mov ax,7517 FCDB cmp ax, 5Ch7517 FCDF jz short loc_7517FCE77517FCE1 cmp ax, 2Fh7517FCE5 jnz short loc_7517FCF47517FCE7 add [ebp + arg_4], 27517 FCEB jmp short loc_7517FCF475
the real execution subjects.
So far, the entire process of calling NtQuerySystemInformation at the application layer has ended ~
Ring3! ZwQuerySystemInformation or NtQuerySystemInformation
Enter the kernel
Ntos 105 h ntos! ZwQuerySystemInformation
Then, through the ssdt index, find
Ntos! NtQuerySystemInformation execution subject.
Speaking of so many theoretical knowledge, we can see the structure of SSDT tables in windbg:
Lkd> dd KeServiceDescriptorTable
84583b00 84498d5c 00000000 00000191
:/bin/bashNo 2-5 Number6 Sync: X: 5: 0: Sync:/sbin:/bin/Sync# No rows 2-5, hey! The materials we need will show up!
Example 5: list only 5th-7 rows[Root @ Linux ~] # NL/etc/passwd | sed-n'5, 7p'5 LP: X: 4: 7: LP:/var/spool/lpd:/sbin/nologin6 Sync: X: 5: 0: Sync:/sbin:/bin/Sync7Shutdown: X: 6: 0: shutdown:/sbin/Shutdown# Why do we need to add the-n parameter? You can issue sed '5, 7p' by yourself'That's it! (Repeated output in rows 5-7)# When the-n parameter is added, the output information is mu
want to replace the content in line 2-5 with "NO 2-5 number?
[Root @ Linux ~] # NL/etc/passwd | sed '2, 5CNo 2-5 Number'
1 root: X: 0: 0: Root:/root:/bin/bash
No 2-5 Number
6 Sync: X: 5: 0: Sync:/sbin:/bin/Sync
# No rows 2-5, hey! The data we need will show up!
Example 5: only 5th-7 rows are listed.
[Root @ Linux ~] # NL/etc/passwd | sed-n'5, 7p'
5 LP: X: 4: 7: LP:/var/spool/lpd:/sbin/nologin
6 Sync: X: 5: 0: Sync:/sbin:/bin/Sync
7 shutdown: X: 6: 0: shutdown:/sbin/Shutdow
:/bin/Sync
7 shutdown: X: 6: 0: shutdown:/sbin/Shutdown
# Why do we need to add the-n parameter? You can issue sed '5, 7p' on your own! (Repeated output in rows 5-7)
# When the-n parameter is added, the output data is much worse!
Example 6: We can use ifconfig to list IP addresses?
[Root @ Linux ~] # Ifconfig eth0
Eth0 link encap: Ethernet hwaddr 00: 51: FD: 52: 9A: CA
Inet ADDR: 192.168.1.12 bcast: 192.168.1.255 mask: 255.255.255.0
Inet6 ADDR: fe80: 250: fc
!!!! "
Sleep 1
Useradd user $ I
Echo "Set user $ I password now !!!!! "
Echo 123 | passwd -- stdin user $ I >/dev/null
Echo "The create user $ I success !!!!! "
Done
Script judgment
#! /Bin/bash
# Determining whether a file exists
If [-f/tmp/aa.txt]
Then
Echo "the file is cunzai !!!!! Display now !!! 1"
Sleep 1
Ls-l/tmp/aa.txt
Else
Echo "the file is now cunzai !!! Create it now !!!! "
Sleep 1
Touch/tmp/aa.txt
Fi
--------------------------------------------------
Network;
View Nic status in
Cracking ).1.1.1 shell Loading Process1. Save the entry functionThe shell program first initializes the values of all registers. After the shell is executed, it restores the content of each register and jumps to OEP to execute the program! Usually, the shelling program uses pushad/pushfd to store the site and uses popad/popfd to restore the site. For example, I added an UPX shell to the delphi7.0 program! His portal is the site that is saved using Pushad!004629D0> 60 pushad // use pushad to sav
systemBefore adding Samba shares, go:System> System Management> users and groupsTo create a tq2440 user.2. Add the user to the samba userSystem> System Management> samba -> Samba server configuration-> preferences-> Samba users-> Add users, Find the corresponding tq2440, and then confirm.3. Create a new share and set the samba user to accessCreate a new share in Samba and set the user tq2440 to access the folder/file.That is, because you have added the samba user before, you can select tq2440 o
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.