LinuxShell output command instance

LinuxShell command output instance-general Linux technology-Linux programming and kernel information. The following is a detailed description. [Root @ root 2009521] # cat shell Mma7450 0-001d: reg0x00: 000 0x00 Mma7450 0-001d: reg0x01: 000 0x00 Mma74

RHEL5 does not recognize the Enter key after Oracle11g is installed and rlwrap is installed

After RHEL5 is installed with Oracle11g, rlwrap does not recognize the Enter key-general Linux technology-Linux technology and application information. For more information, see the following. As described in the question, the Enter key is not

When I first came, I asked a question about codeblocks.

When I first came, I asked a question about codeblocks. -- Linux general technology-Linux programming and kernel information. The following is a detailed description. I installed codeblocks in RedHat9.0 according to the online method and can detect

File executable?

File executable? -- Linux general technology-Linux technology and application information. For details, refer to the following section. D -- x 2 weihua 4096 05-14 1 Drwxr-xr-x 6 weihua 4096 05-24 3 Drwxr-xr-x 3 weihua 4096 05-14 4 Drwxr-xr-x 2

Use shell scripts to reject IP addresses with TCP connections greater than 20

Recently, the server was frequently attacked by CC attacks. After packet capture and analysis of the number of connections, it was found that the number of concurrent connections on a single server reached more than 50 thousand. I wanted to use the

A classic and practical iptablesshell script

PS: This iptables script is good and practical. You can use it as needed. For your reference. Original Author alias name. The source code is as follows: First, explain the parameter meanings in iptables:A: add (Link)-I: insert-P: Protocol-S: source

N methods for shell to determine a variable as a number

Method 1: Use expr to calculate the sum of the variable and an integer. If normal execution is performed, the variable is an integer. Otherwise, an error occurs. $? Replace a non-0 value expr $ args + 0 & amp; & gt;/dev/null. Method 2: print the

MenuetOS, operating system fully written in assembly language

MenuetOS, an operating system fully written in assembly language-general Linux technology-Linux programming and kernel information. The following is a detailed description. MenuetOS is an operating system fully written in assembly language.

Samba server configuration problems in redhax

For details about samba server configuration in redhax, refer to general Linux technology-Linux technology and application information. [Root @ localhost/] # service smb restart Disable the SMB service: [failed] Disable NMB service: [failed]

Solve the Linux Crash Problem

Solve the Linux Crash problem-general Linux technology-Linux programming and kernel information. The following is a detailed description. Today, another student asked me why Linux crashed. When you execute a touch program, suddenly the screen

Useful methods and scripts for checking whether a process exists and counting the number of processes

#/Bin/bashcd/data/scrapy/hm-papers # Find the scrapy process, and count the number of processes with line 1 equal to start iftest $ (ps-ef | grepscrapy | awk & #39; {print $11} & #39; | grepstart | wc-l) -gt3the #/bin/bash Cd/data/scrapy/hm-papers

Compare whether the files on the shell online server are consistent

At work, you sometimes need to compare whether the files are consistent. You can use the following script (relatively simple): share it and hope to help friends who have the same requirements ~ #! /Bin/bash # compare whether files on the server are

Shell uses the TTL return value to determine the host operating system in the network segment

TTL refers to the lifecycle of a network-layer package. You can use the echo TTL of ping to determine the operating system of a machine. (Although some system network parameters can be modified, but this value is rarely modified) the following

Centos6.3 Lenovo ysung Installation Problems

Centos6.3 Lenovo ysung-general Linux technology-Linux technology and application information. For more information, see the following section. My computer is Lenovo Yoka 4G Memory 1 TB hard drive PCU I5 3210 graphics card: GF 650 M Intel HD graphics

Shell monitors the disk and prints out the disk

A few days ago, I went to the interview and wrote the last simple shell script. shell monitored more than 80% of the disks and displayed the disk name. The script I wrote at the time was as follows :#! /Bin/basharray = ('df | sed1d | awk & #39;

Use shell to check for errors in logs and send emails if any errors occur.

#! /Bin/bash # Initialize the environment variable source. bash_profile # The inherent date format f_name in the log name = 'date + % Y % m % d' # the path and name of the log log_file =/backup/db/rman/log/rman $ f_name-0401.logecho $ log_file #

Shell task scheduled backup log script

Log_bak.sh code bin_home = & quot;/home // bin & quot; Folder_DEPLOY = $ bin_home & quot;/log & quot; log_back = & quot;/home/logback & quot; functioncheckDerectory () {if [& quot; 'ls- Log_bak.sh code Bin_home = "/home // bin"Folder_DEPLOY = $

Mcelog information cannot be understood. I am a beginner. could you please take a look?

Mcelog information cannot be understood. I am a beginner. let's take a look at Linux general technology-Linux technology and application information. The following is a detailed description. Suse 11 is used, and the following information is

How should we change from win to linux?

How should we change from win to linux? -- Linux general technology-Linux technology and application information. for details, refer to the following section. I am from the gaming industry. We have been developing game servers under win. When I

Menucurser programming, menu display exception

Menucurser programming, menu display exception-General Linux technology-Linux programming and kernel information, the following is read details. The code is as follows: ==========> Obtain the menu item function ================================== ====

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